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Finding the Fourth Proportional to 9,371.52, 12,932.64 and 5,179.76

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Solution

The fourth proportional to 9,371.52, 12,932.64 and 5,179.76 is: 7,148.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,371.52 : 12,932.64 = 5,179.76 : x
  2. Step 2: Convert to fraction form
    9,371.52/12,932.64 = 5,179.76/x
  3. Step 3: Cross multiply
    9,371.52x = 12,932.64 × 5,179.76
  4. Step 4: Simplify right side
    9,371.52x = 66,987,971.37
  5. Step 5: Solve for x
    x = 66,987,971.37/9,371.52
  6. Step 6: Final answer
    x = 7,148.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.