Home / 2,126.18-2,934.43-1,287.43

Finding the Fourth Proportional to 2,126.18, 2,934.43 and 1,287.43

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Solution

The fourth proportional to 2,126.18, 2,934.43 and 1,287.43 is: 1,776.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,126.18 : 2,934.43 = 1,287.43 : x
  2. Step 2: Convert to fraction form
    2,126.18/2,934.43 = 1,287.43/x
  3. Step 3: Cross multiply
    2,126.18x = 2,934.43 × 1,287.43
  4. Step 4: Simplify right side
    2,126.18x = 3,777,862.66
  5. Step 5: Solve for x
    x = 3,777,862.66/2,126.18
  6. Step 6: Final answer
    x = 1,776.83

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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.