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Finding the Fourth Proportional to 3,327.70, 4,991.91 and 1,248.70

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Solution

The fourth proportional to 3,327.70, 4,991.91 and 1,248.70 is: 1,873.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,327.70 : 4,991.91 = 1,248.70 : x
  2. Step 2: Convert to fraction form
    3,327.70/4,991.91 = 1,248.70/x
  3. Step 3: Cross multiply
    3,327.70x = 4,991.91 × 1,248.70
  4. Step 4: Simplify right side
    3,327.70x = 6,233,398.02
  5. Step 5: Solve for x
    x = 6,233,398.02/3,327.70
  6. Step 6: Final answer
    x = 1,873.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.