Home / 3,001.14-4,145.27-2,120.90

Finding the Fourth Proportional to 3,001.14, 4,145.27 and 2,120.90

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Solution

The fourth proportional to 3,001.14, 4,145.27 and 2,120.90 is: 2,929.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,001.14 : 4,145.27 = 2,120.90 : x
  2. Step 2: Convert to fraction form
    3,001.14/4,145.27 = 2,120.90/x
  3. Step 3: Cross multiply
    3,001.14x = 4,145.27 × 2,120.90
  4. Step 4: Simplify right side
    3,001.14x = 8,791,671.81
  5. Step 5: Solve for x
    x = 8,791,671.81/3,001.14
  6. Step 6: Final answer
    x = 2,929.44

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Half scale
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Double scale
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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.