Home / 1,327.28-1,981.22-1,230.91

Finding the Fourth Proportional to 1,327.28, 1,981.22 and 1,230.91

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Solution

The fourth proportional to 1,327.28, 1,981.22 and 1,230.91 is: 1,837.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,327.28 : 1,981.22 = 1,230.91 : x
  2. Step 2: Convert to fraction form
    1,327.28/1,981.22 = 1,230.91/x
  3. Step 3: Cross multiply
    1,327.28x = 1,981.22 × 1,230.91
  4. Step 4: Simplify right side
    1,327.28x = 2,438,697.36
  5. Step 5: Solve for x
    x = 2,438,697.36/1,327.28
  6. Step 6: Final answer
    x = 1,837.36

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.