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Finding the Fourth Proportional to 9,382.91, 12,959.04 and 6,393.55

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Solution

The fourth proportional to 9,382.91, 12,959.04 and 6,393.55 is: 8,830.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,382.91 : 12,959.04 = 6,393.55 : x
  2. Step 2: Convert to fraction form
    9,382.91/12,959.04 = 6,393.55/x
  3. Step 3: Cross multiply
    9,382.91x = 12,959.04 × 6,393.55
  4. Step 4: Simplify right side
    9,382.91x = 82,854,250.10
  5. Step 5: Solve for x
    x = 82,854,250.10/9,382.91
  6. Step 6: Final answer
    x = 8,830.34

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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.