Home / 1,331.71-1,996.35-1,127.59

Finding the Fourth Proportional to 1,331.71, 1,996.35 and 1,127.59

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Solution

The fourth proportional to 1,331.71, 1,996.35 and 1,127.59 is: 1,690.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,331.71 : 1,996.35 = 1,127.59 : x
  2. Step 2: Convert to fraction form
    1,331.71/1,996.35 = 1,127.59/x
  3. Step 3: Cross multiply
    1,331.71x = 1,996.35 × 1,127.59
  4. Step 4: Simplify right side
    1,331.71x = 2,251,064.30
  5. Step 5: Solve for x
    x = 2,251,064.30/1,331.71
  6. Step 6: Final answer
    x = 1,690.36

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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.