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Finding the Fourth Proportional to 8,764.88, 13,147.32 and 4,659.92

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Solution

The fourth proportional to 8,764.88, 13,147.32 and 4,659.92 is: 6,989.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,764.88 : 13,147.32 = 4,659.92 : x
  2. Step 2: Convert to fraction form
    8,764.88/13,147.32 = 4,659.92/x
  3. Step 3: Cross multiply
    8,764.88x = 13,147.32 × 4,659.92
  4. Step 4: Simplify right side
    8,764.88x = 61,265,459.41
  5. Step 5: Solve for x
    x = 61,265,459.41/8,764.88
  6. Step 6: Final answer
    x = 6,989.88

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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.