Home / 8,921.32-12,306.46-7,025.92

Finding the Fourth Proportional to 8,921.32, 12,306.46 and 7,025.92

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Solution

The fourth proportional to 8,921.32, 12,306.46 and 7,025.92 is: 9,691.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,921.32 : 12,306.46 = 7,025.92 : x
  2. Step 2: Convert to fraction form
    8,921.32/12,306.46 = 7,025.92/x
  3. Step 3: Cross multiply
    8,921.32x = 12,306.46 × 7,025.92
  4. Step 4: Simplify right side
    8,921.32x = 86,464,203.44
  5. Step 5: Solve for x
    x = 86,464,203.44/8,921.32
  6. Step 6: Final answer
    x = 9,691.86

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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.