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Finding the Fourth Proportional to 3,617.82, 4,987.78 and 3,248.78

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Solution

The fourth proportional to 3,617.82, 4,987.78 and 3,248.78 is: 4,478.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,617.82 : 4,987.78 = 3,248.78 : x
  2. Step 2: Convert to fraction form
    3,617.82/4,987.78 = 3,248.78/x
  3. Step 3: Cross multiply
    3,617.82x = 4,987.78 × 3,248.78
  4. Step 4: Simplify right side
    3,617.82x = 16,204,166.85
  5. Step 5: Solve for x
    x = 16,204,166.85/3,617.82
  6. Step 6: Final answer
    x = 4,478.99

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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.