Home / 1,487.48-2,230.29-707.72

Finding the Fourth Proportional to 1,487.48, 2,230.29 and 707.72

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Solution

The fourth proportional to 1,487.48, 2,230.29 and 707.72 is: 1,061.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,487.48 : 2,230.29 = 707.72 : x
  2. Step 2: Convert to fraction form
    1,487.48/2,230.29 = 707.72/x
  3. Step 3: Cross multiply
    1,487.48x = 2,230.29 × 707.72
  4. Step 4: Simplify right side
    1,487.48x = 1,578,409.69
  5. Step 5: Solve for x
    x = 1,578,409.69/1,487.48
  6. Step 6: Final answer
    x = 1,061.13

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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.