Home / 3,122.52-4,306.86-2,126.28

Finding the Fourth Proportional to 3,122.52, 4,306.86 and 2,126.28

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Solution

The fourth proportional to 3,122.52, 4,306.86 and 2,126.28 is: 2,932.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,122.52 : 4,306.86 = 2,126.28 : x
  2. Step 2: Convert to fraction form
    3,122.52/4,306.86 = 2,126.28/x
  3. Step 3: Cross multiply
    3,122.52x = 4,306.86 × 2,126.28
  4. Step 4: Simplify right side
    3,122.52x = 9,157,590.28
  5. Step 5: Solve for x
    x = 9,157,590.28/3,122.52
  6. Step 6: Final answer
    x = 2,932.76

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1.5x scale

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.