Home / 1,996.90-2,755.40-1,332.70

Finding the Fourth Proportional to 1,996.90, 2,755.40 and 1,332.70

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Solution

The fourth proportional to 1,996.90, 2,755.40 and 1,332.70 is: 1,838.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,996.90 : 2,755.40 = 1,332.70 : x
  2. Step 2: Convert to fraction form
    1,996.90/2,755.40 = 1,332.70/x
  3. Step 3: Cross multiply
    1,996.90x = 2,755.40 × 1,332.70
  4. Step 4: Simplify right side
    1,996.90x = 3,672,121.58
  5. Step 5: Solve for x
    x = 3,672,121.58/1,996.90
  6. Step 6: Final answer
    x = 1,838.91

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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.