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Finding the Fourth Proportional to 10,052.80, 15,079.20 and 4,128.68

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Solution

The fourth proportional to 10,052.80, 15,079.20 and 4,128.68 is: 6,193.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,052.80 : 15,079.20 = 4,128.68 : x
  2. Step 2: Convert to fraction form
    10,052.80/15,079.20 = 4,128.68/x
  3. Step 3: Cross multiply
    10,052.80x = 15,079.20 × 4,128.68
  4. Step 4: Simplify right side
    10,052.80x = 62,257,191.46
  5. Step 5: Solve for x
    x = 62,257,191.46/10,052.80
  6. Step 6: Final answer
    x = 6,193.02

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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.