Home / 2,865.38-3,952.14-1,802.12

Finding the Fourth Proportional to 2,865.38, 3,952.14 and 1,802.12

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Solution

The fourth proportional to 2,865.38, 3,952.14 and 1,802.12 is: 2,485.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,865.38 : 3,952.14 = 1,802.12 : x
  2. Step 2: Convert to fraction form
    2,865.38/3,952.14 = 1,802.12/x
  3. Step 3: Cross multiply
    2,865.38x = 3,952.14 × 1,802.12
  4. Step 4: Simplify right side
    2,865.38x = 7,122,230.54
  5. Step 5: Solve for x
    x = 7,122,230.54/2,865.38
  6. Step 6: Final answer
    x = 2,485.61

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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.