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Finding the Fourth Proportional to 8,615.68, 11,881.92 and 6,749.44

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Solution

The fourth proportional to 8,615.68, 11,881.92 and 6,749.44 is: 9,308.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,615.68 : 11,881.92 = 6,749.44 : x
  2. Step 2: Convert to fraction form
    8,615.68/11,881.92 = 6,749.44/x
  3. Step 3: Cross multiply
    8,615.68x = 11,881.92 × 6,749.44
  4. Step 4: Simplify right side
    8,615.68x = 80,196,306.12
  5. Step 5: Solve for x
    x = 80,196,306.12/8,615.68
  6. Step 6: Final answer
    x = 9,308.18

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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.