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Finding the Fourth Proportional to 5,287.79, 7,932.17 and 1,729.92

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Solution

The fourth proportional to 5,287.79, 7,932.17 and 1,729.92 is: 2,595.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,287.79 : 7,932.17 = 1,729.92 : x
  2. Step 2: Convert to fraction form
    5,287.79/7,932.17 = 1,729.92/x
  3. Step 3: Cross multiply
    5,287.79x = 7,932.17 × 1,729.92
  4. Step 4: Simplify right side
    5,287.79x = 13,722,040.62
  5. Step 5: Solve for x
    x = 13,722,040.62/5,287.79
  6. Step 6: Final answer
    x = 2,595.05

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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.