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Finding the Fourth Proportional to 6,463.57, 8,920.55 and 3,945.14

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Solution

The fourth proportional to 6,463.57, 8,920.55 and 3,945.14 is: 5,444.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,463.57 : 8,920.55 = 3,945.14 : x
  2. Step 2: Convert to fraction form
    6,463.57/8,920.55 = 3,945.14/x
  3. Step 3: Cross multiply
    6,463.57x = 8,920.55 × 3,945.14
  4. Step 4: Simplify right side
    6,463.57x = 35,192,853.26
  5. Step 5: Solve for x
    x = 35,192,853.26/6,463.57
  6. Step 6: Final answer
    x = 5,444.80

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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.