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Finding the Fourth Proportional to 1,708.22, 2,560.11 and 1,487.90

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Solution

The fourth proportional to 1,708.22, 2,560.11 and 1,487.90 is: 2,229.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,708.22 : 2,560.11 = 1,487.90 : x
  2. Step 2: Convert to fraction form
    1,708.22/2,560.11 = 1,487.90/x
  3. Step 3: Cross multiply
    1,708.22x = 2,560.11 × 1,487.90
  4. Step 4: Simplify right side
    1,708.22x = 3,809,187.67
  5. Step 5: Solve for x
    x = 3,809,187.67/1,708.22
  6. Step 6: Final answer
    x = 2,229.92

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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.