Home / 10,120.60-15,177.60-3,880.28

Finding the Fourth Proportional to 10,120.60, 15,177.60 and 3,880.28

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Solution

The fourth proportional to 10,120.60, 15,177.60 and 3,880.28 is: 5,819.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,120.60 : 15,177.60 = 3,880.28 : x
  2. Step 2: Convert to fraction form
    10,120.60/15,177.60 = 3,880.28/x
  3. Step 3: Cross multiply
    10,120.60x = 15,177.60 × 3,880.28
  4. Step 4: Simplify right side
    10,120.60x = 58,893,337.73
  5. Step 5: Solve for x
    x = 58,893,337.73/10,120.60
  6. Step 6: Final answer
    x = 5,819.15

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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.