Home / 1,418.90-2,129.76-1,161.92

Finding the Fourth Proportional to 1,418.90, 2,129.76 and 1,161.92

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Solution

The fourth proportional to 1,418.90, 2,129.76 and 1,161.92 is: 1,744.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,418.90 : 2,129.76 = 1,161.92 : x
  2. Step 2: Convert to fraction form
    1,418.90/2,129.76 = 1,161.92/x
  3. Step 3: Cross multiply
    1,418.90x = 2,129.76 × 1,161.92
  4. Step 4: Simplify right side
    1,418.90x = 2,474,610.74
  5. Step 5: Solve for x
    x = 2,474,610.74/1,418.90
  6. Step 6: Final answer
    x = 1,744.03

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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.