Home / 9,330.64-12,872.12-6,304.78

Finding the Fourth Proportional to 9,330.64, 12,872.12 and 6,304.78

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Solution

The fourth proportional to 9,330.64, 12,872.12 and 6,304.78 is: 8,697.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,330.64 : 12,872.12 = 6,304.78 : x
  2. Step 2: Convert to fraction form
    9,330.64/12,872.12 = 6,304.78/x
  3. Step 3: Cross multiply
    9,330.64x = 12,872.12 × 6,304.78
  4. Step 4: Simplify right side
    9,330.64x = 81,155,884.73
  5. Step 5: Solve for x
    x = 81,155,884.73/9,330.64
  6. Step 6: Final answer
    x = 8,697.78

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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.