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Finding the Fourth Proportional to 5,229.71, 7,842.89 and 1,718.90

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Solution

The fourth proportional to 5,229.71, 7,842.89 and 1,718.90 is: 2,577.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,229.71 : 7,842.89 = 1,718.90 : x
  2. Step 2: Convert to fraction form
    5,229.71/7,842.89 = 1,718.90/x
  3. Step 3: Cross multiply
    5,229.71x = 7,842.89 × 1,718.90
  4. Step 4: Simplify right side
    5,229.71x = 13,481,143.62
  5. Step 5: Solve for x
    x = 13,481,143.62/5,229.71
  6. Step 6: Final answer
    x = 2,577.80

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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.