Home / 1,478.38-2,218.45-1,327.11

Finding the Fourth Proportional to 1,478.38, 2,218.45 and 1,327.11

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Solution

The fourth proportional to 1,478.38, 2,218.45 and 1,327.11 is: 1,991.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,478.38 : 2,218.45 = 1,327.11 : x
  2. Step 2: Convert to fraction form
    1,478.38/2,218.45 = 1,327.11/x
  3. Step 3: Cross multiply
    1,478.38x = 2,218.45 × 1,327.11
  4. Step 4: Simplify right side
    1,478.38x = 2,944,123.86
  5. Step 5: Solve for x
    x = 2,944,123.86/1,478.38
  6. Step 6: Final answer
    x = 1,991.46

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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.