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Finding the Fourth Proportional to 6,512.76, 8,989.22 and 3,719.88

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Solution

The fourth proportional to 6,512.76, 8,989.22 and 3,719.88 is: 5,134.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,512.76 : 8,989.22 = 3,719.88 : x
  2. Step 2: Convert to fraction form
    6,512.76/8,989.22 = 3,719.88/x
  3. Step 3: Cross multiply
    6,512.76x = 8,989.22 × 3,719.88
  4. Step 4: Simplify right side
    6,512.76x = 33,438,819.69
  5. Step 5: Solve for x
    x = 33,438,819.69/6,512.76
  6. Step 6: Final answer
    x = 5,134.35

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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.