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Finding the Fourth Proportional to 1,487.57, 2,229.19 and 756.14

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Solution

The fourth proportional to 1,487.57, 2,229.19 and 756.14 is: 1,133.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,487.57 : 2,229.19 = 756.14 : x
  2. Step 2: Convert to fraction form
    1,487.57/2,229.19 = 756.14/x
  3. Step 3: Cross multiply
    1,487.57x = 2,229.19 × 756.14
  4. Step 4: Simplify right side
    1,487.57x = 1,685,566.69
  5. Step 5: Solve for x
    x = 1,685,566.69/1,487.57
  6. Step 6: Final answer
    x = 1,133.10

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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.