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Finding the Fourth Proportional to 9,401.28, 12,958.54 and 6,375.40

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Solution

The fourth proportional to 9,401.28, 12,958.54 and 6,375.40 is: 8,787.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,401.28 : 12,958.54 = 6,375.40 : x
  2. Step 2: Convert to fraction form
    9,401.28/12,958.54 = 6,375.40/x
  3. Step 3: Cross multiply
    9,401.28x = 12,958.54 × 6,375.40
  4. Step 4: Simplify right side
    9,401.28x = 82,615,875.92
  5. Step 5: Solve for x
    x = 82,615,875.92/9,401.28
  6. Step 6: Final answer
    x = 8,787.73

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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.