Home / 3,636.38-5,018.40-2,145.17

Finding the Fourth Proportional to 3,636.38, 5,018.40 and 2,145.17

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Solution

The fourth proportional to 3,636.38, 5,018.40 and 2,145.17 is: 2,960.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,636.38 : 5,018.40 = 2,145.17 : x
  2. Step 2: Convert to fraction form
    3,636.38/5,018.40 = 2,145.17/x
  3. Step 3: Cross multiply
    3,636.38x = 5,018.40 × 2,145.17
  4. Step 4: Simplify right side
    3,636.38x = 10,765,296.04
  5. Step 5: Solve for x
    x = 10,765,296.04/3,636.38
  6. Step 6: Final answer
    x = 2,960.45

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Find fourth proportional to 1,818.19, 2,509.20 and 1,072.58
Half scale
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Double scale
Find fourth proportional to 3,637.38, 5,019.78 and 2,146.17
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.