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Finding the Fourth Proportional to 8,862.68, 13,312.46 and 7,478.69

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Solution

The fourth proportional to 8,862.68, 13,312.46 and 7,478.69 is: 11,233.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,862.68 : 13,312.46 = 7,478.69 : x
  2. Step 2: Convert to fraction form
    8,862.68/13,312.46 = 7,478.69/x
  3. Step 3: Cross multiply
    8,862.68x = 13,312.46 × 7,478.69
  4. Step 4: Simplify right side
    8,862.68x = 99,559,713.61
  5. Step 5: Solve for x
    x = 99,559,713.61/8,862.68
  6. Step 6: Final answer
    x = 11,233.59

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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.