Home / 5,425.38-8,139.08-1,728.54

Finding the Fourth Proportional to 5,425.38, 8,139.08 and 1,728.54

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Solution

The fourth proportional to 5,425.38, 8,139.08 and 1,728.54 is: 2,593.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,425.38 : 8,139.08 = 1,728.54 : x
  2. Step 2: Convert to fraction form
    5,425.38/8,139.08 = 1,728.54/x
  3. Step 3: Cross multiply
    5,425.38x = 8,139.08 × 1,728.54
  4. Step 4: Simplify right side
    5,425.38x = 14,068,729.66
  5. Step 5: Solve for x
    x = 14,068,729.66/5,425.38
  6. Step 6: Final answer
    x = 2,593.13

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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.