Home / 1,487.26-2,229.45-621.10

Finding the Fourth Proportional to 1,487.26, 2,229.45 and 621.10

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Solution

The fourth proportional to 1,487.26, 2,229.45 and 621.10 is: 931.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,487.26 : 2,229.45 = 621.10 : x
  2. Step 2: Convert to fraction form
    1,487.26/2,229.45 = 621.10/x
  3. Step 3: Cross multiply
    1,487.26x = 2,229.45 × 621.10
  4. Step 4: Simplify right side
    1,487.26x = 1,384,711.40
  5. Step 5: Solve for x
    x = 1,384,711.40/1,487.26
  6. Step 6: Final answer
    x = 931.05

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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.