Home / 1,277.90-1,761.87-1,100.48

Finding the Fourth Proportional to 1,277.90, 1,761.87 and 1,100.48

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Solution

The fourth proportional to 1,277.90, 1,761.87 and 1,100.48 is: 1,517.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,277.90 : 1,761.87 = 1,100.48 : x
  2. Step 2: Convert to fraction form
    1,277.90/1,761.87 = 1,100.48/x
  3. Step 3: Cross multiply
    1,277.90x = 1,761.87 × 1,100.48
  4. Step 4: Simplify right side
    1,277.90x = 1,938,902.70
  5. Step 5: Solve for x
    x = 1,938,902.70/1,277.90
  6. Step 6: Final answer
    x = 1,517.26

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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.