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Finding the Fourth Proportional to 8,885.16, 13,294.84 and 7,124.78

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Solution

The fourth proportional to 8,885.16, 13,294.84 and 7,124.78 is: 10,660.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,885.16 : 13,294.84 = 7,124.78 : x
  2. Step 2: Convert to fraction form
    8,885.16/13,294.84 = 7,124.78/x
  3. Step 3: Cross multiply
    8,885.16x = 13,294.84 × 7,124.78
  4. Step 4: Simplify right side
    8,885.16x = 94,722,810.14
  5. Step 5: Solve for x
    x = 94,722,810.14/8,885.16
  6. Step 6: Final answer
    x = 10,660.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.