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Finding the Fourth Proportional to 2,387.47, 3,581.65 and 907.13

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Solution

The fourth proportional to 2,387.47, 3,581.65 and 907.13 is: 1,360.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,387.47 : 3,581.65 = 907.13 : x
  2. Step 2: Convert to fraction form
    2,387.47/3,581.65 = 907.13/x
  3. Step 3: Cross multiply
    2,387.47x = 3,581.65 × 907.13
  4. Step 4: Simplify right side
    2,387.47x = 3,249,022.16
  5. Step 5: Solve for x
    x = 3,249,022.16/2,387.47
  6. Step 6: Final answer
    x = 1,360.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.