Home / 1,487.17-2,232.21-707.70

Finding the Fourth Proportional to 1,487.17, 2,232.21 and 707.70

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Solution

The fourth proportional to 1,487.17, 2,232.21 and 707.70 is: 1,062.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,487.17 : 2,232.21 = 707.70 : x
  2. Step 2: Convert to fraction form
    1,487.17/2,232.21 = 707.70/x
  3. Step 3: Cross multiply
    1,487.17x = 2,232.21 × 707.70
  4. Step 4: Simplify right side
    1,487.17x = 1,579,735.02
  5. Step 5: Solve for x
    x = 1,579,735.02/1,487.17
  6. Step 6: Final answer
    x = 1,062.24

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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.