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Finding the Fourth Proportional to 8,729.60, 12,047.12 and 4,750.48

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Solution

The fourth proportional to 8,729.60, 12,047.12 and 4,750.48 is: 6,555.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,729.60 : 12,047.12 = 4,750.48 : x
  2. Step 2: Convert to fraction form
    8,729.60/12,047.12 = 4,750.48/x
  3. Step 3: Cross multiply
    8,729.60x = 12,047.12 × 4,750.48
  4. Step 4: Simplify right side
    8,729.60x = 57,229,602.62
  5. Step 5: Solve for x
    x = 57,229,602.62/8,729.60
  6. Step 6: Final answer
    x = 6,555.81

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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.