Home / 8,138.60-11,224.20-5,304.88

Finding the Fourth Proportional to 8,138.60, 11,224.20 and 5,304.88

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Solution

The fourth proportional to 8,138.60, 11,224.20 and 5,304.88 is: 7,316.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,138.60 : 11,224.20 = 5,304.88 : x
  2. Step 2: Convert to fraction form
    8,138.60/11,224.20 = 5,304.88/x
  3. Step 3: Cross multiply
    8,138.60x = 11,224.20 × 5,304.88
  4. Step 4: Simplify right side
    8,138.60x = 59,543,034.10
  5. Step 5: Solve for x
    x = 59,543,034.10/8,138.60
  6. Step 6: Final answer
    x = 7,316.13

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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.