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Finding the Fourth Proportional to 6,218.76, 8,581.86 and 3,385.92

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Solution

The fourth proportional to 6,218.76, 8,581.86 and 3,385.92 is: 4,672.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,218.76 : 8,581.86 = 3,385.92 : x
  2. Step 2: Convert to fraction form
    6,218.76/8,581.86 = 3,385.92/x
  3. Step 3: Cross multiply
    6,218.76x = 8,581.86 × 3,385.92
  4. Step 4: Simplify right side
    6,218.76x = 29,057,491.41
  5. Step 5: Solve for x
    x = 29,057,491.41/6,218.76
  6. Step 6: Final answer
    x = 4,672.55

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Double scale
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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.