Home / 8,972.66-13,458.87-3,129.25

Finding the Fourth Proportional to 8,972.66, 13,458.87 and 3,129.25

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Solution

The fourth proportional to 8,972.66, 13,458.87 and 3,129.25 is: 4,693.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,972.66 : 13,458.87 = 3,129.25 : x
  2. Step 2: Convert to fraction form
    8,972.66/13,458.87 = 3,129.25/x
  3. Step 3: Cross multiply
    8,972.66x = 13,458.87 × 3,129.25
  4. Step 4: Simplify right side
    8,972.66x = 42,116,168.95
  5. Step 5: Solve for x
    x = 42,116,168.95/8,972.66
  6. Step 6: Final answer
    x = 4,693.83

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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.