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Finding the Fourth Proportional to 6,451.85, 8,895.20 and 4,179.15

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Solution

The fourth proportional to 6,451.85, 8,895.20 and 4,179.15 is: 5,761.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,451.85 : 8,895.20 = 4,179.15 : x
  2. Step 2: Convert to fraction form
    6,451.85/8,895.20 = 4,179.15/x
  3. Step 3: Cross multiply
    6,451.85x = 8,895.20 × 4,179.15
  4. Step 4: Simplify right side
    6,451.85x = 37,174,354.18
  5. Step 5: Solve for x
    x = 37,174,354.18/6,451.85
  6. Step 6: Final answer
    x = 5,761.82

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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.