Home / 1,480.20-2,042.44-816.96

Finding the Fourth Proportional to 1,480.20, 2,042.44 and 816.96

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Solution

The fourth proportional to 1,480.20, 2,042.44 and 816.96 is: 1,127.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,480.20 : 2,042.44 = 816.96 : x
  2. Step 2: Convert to fraction form
    1,480.20/2,042.44 = 816.96/x
  3. Step 3: Cross multiply
    1,480.20x = 2,042.44 × 816.96
  4. Step 4: Simplify right side
    1,480.20x = 1,668,591.78
  5. Step 5: Solve for x
    x = 1,668,591.78/1,480.20
  6. Step 6: Final answer
    x = 1,127.27

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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.