Home / 1,487.04-2,231.10-707.28

Finding the Fourth Proportional to 1,487.04, 2,231.10 and 707.28

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Solution

The fourth proportional to 1,487.04, 2,231.10 and 707.28 is: 1,061.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,487.04 : 2,231.10 = 707.28 : x
  2. Step 2: Convert to fraction form
    1,487.04/2,231.10 = 707.28/x
  3. Step 3: Cross multiply
    1,487.04x = 2,231.10 × 707.28
  4. Step 4: Simplify right side
    1,487.04x = 1,578,012.41
  5. Step 5: Solve for x
    x = 1,578,012.41/1,487.04
  6. Step 6: Final answer
    x = 1,061.18

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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.