Home / 7,422.78-11,132.22-2,156.38

Finding the Fourth Proportional to 7,422.78, 11,132.22 and 2,156.38

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Solution

The fourth proportional to 7,422.78, 11,132.22 and 2,156.38 is: 3,234.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,422.78 : 11,132.22 = 2,156.38 : x
  2. Step 2: Convert to fraction form
    7,422.78/11,132.22 = 2,156.38/x
  3. Step 3: Cross multiply
    7,422.78x = 11,132.22 × 2,156.38
  4. Step 4: Simplify right side
    7,422.78x = 24,005,268.73
  5. Step 5: Solve for x
    x = 24,005,268.73/7,422.78
  6. Step 6: Final answer
    x = 3,234.00

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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.