Home / 7,418.78-11,129.88-2,224.76

Finding the Fourth Proportional to 7,418.78, 11,129.88 and 2,224.76

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Solution

The fourth proportional to 7,418.78, 11,129.88 and 2,224.76 is: 3,337.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,418.78 : 11,129.88 = 2,224.76 : x
  2. Step 2: Convert to fraction form
    7,418.78/11,129.88 = 2,224.76/x
  3. Step 3: Cross multiply
    7,418.78x = 11,129.88 × 2,224.76
  4. Step 4: Simplify right side
    7,418.78x = 24,761,311.83
  5. Step 5: Solve for x
    x = 24,761,311.83/7,418.78
  6. Step 6: Final answer
    x = 3,337.65

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1.5x scale

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.