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Finding the Fourth Proportional to 6,450.75, 8,901.17 and 3,579.43

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Solution

The fourth proportional to 6,450.75, 8,901.17 and 3,579.43 is: 4,939.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,450.75 : 8,901.17 = 3,579.43 : x
  2. Step 2: Convert to fraction form
    6,450.75/8,901.17 = 3,579.43/x
  3. Step 3: Cross multiply
    6,450.75x = 8,901.17 × 3,579.43
  4. Step 4: Simplify right side
    6,450.75x = 31,861,114.93
  5. Step 5: Solve for x
    x = 31,861,114.93/6,450.75
  6. Step 6: Final answer
    x = 4,939.13

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Find fourth proportional to 3,225.38, 4,450.59 and 1,789.72
Half scale
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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.