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Finding the Fourth Proportional to 8,729.60, 12,047.10 and 4,750.97

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Solution

The fourth proportional to 8,729.60, 12,047.10 and 4,750.97 is: 6,556.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,729.60 : 12,047.10 = 4,750.97 : x
  2. Step 2: Convert to fraction form
    8,729.60/12,047.10 = 4,750.97/x
  3. Step 3: Cross multiply
    8,729.60x = 12,047.10 × 4,750.97
  4. Step 4: Simplify right side
    8,729.60x = 57,235,332.64
  5. Step 5: Solve for x
    x = 57,235,332.64/8,729.60
  6. Step 6: Final answer
    x = 6,556.47

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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.