Home / 8,422.57-11,627.85-5,912.38

Finding the Fourth Proportional to 8,422.57, 11,627.85 and 5,912.38

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Solution

The fourth proportional to 8,422.57, 11,627.85 and 5,912.38 is: 8,162.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,422.57 : 11,627.85 = 5,912.38 : x
  2. Step 2: Convert to fraction form
    8,422.57/11,627.85 = 5,912.38/x
  3. Step 3: Cross multiply
    8,422.57x = 11,627.85 × 5,912.38
  4. Step 4: Simplify right side
    8,422.57x = 68,748,267.78
  5. Step 5: Solve for x
    x = 68,748,267.78/8,422.57
  6. Step 6: Final answer
    x = 8,162.39

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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.