Home / 5,419.71-8,129.16-1,523.61

Finding the Fourth Proportional to 5,419.71, 8,129.16 and 1,523.61

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Solution

The fourth proportional to 5,419.71, 8,129.16 and 1,523.61 is: 2,285.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,419.71 : 8,129.16 = 1,523.61 : x
  2. Step 2: Convert to fraction form
    5,419.71/8,129.16 = 1,523.61/x
  3. Step 3: Cross multiply
    5,419.71x = 8,129.16 × 1,523.61
  4. Step 4: Simplify right side
    5,419.71x = 12,385,669.47
  5. Step 5: Solve for x
    x = 12,385,669.47/5,419.71
  6. Step 6: Final answer
    x = 2,285.30

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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.