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Finding the Fourth Proportional to 8,613.78, 11,884.14 and 4,836.30

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Solution

The fourth proportional to 8,613.78, 11,884.14 and 4,836.30 is: 6,672.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,613.78 : 11,884.14 = 4,836.30 : x
  2. Step 2: Convert to fraction form
    8,613.78/11,884.14 = 4,836.30/x
  3. Step 3: Cross multiply
    8,613.78x = 11,884.14 × 4,836.30
  4. Step 4: Simplify right side
    8,613.78x = 57,475,266.28
  5. Step 5: Solve for x
    x = 57,475,266.28/8,613.78
  6. Step 6: Final answer
    x = 6,672.48

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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.