Home / 7,138.22-10,755.49-5,915.96

Finding the Fourth Proportional to 7,138.22, 10,755.49 and 5,915.96

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Solution

The fourth proportional to 7,138.22, 10,755.49 and 5,915.96 is: 8,913.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,138.22 : 10,755.49 = 5,915.96 : x
  2. Step 2: Convert to fraction form
    7,138.22/10,755.49 = 5,915.96/x
  3. Step 3: Cross multiply
    7,138.22x = 10,755.49 × 5,915.96
  4. Step 4: Simplify right side
    7,138.22x = 63,629,019.04
  5. Step 5: Solve for x
    x = 63,629,019.04/7,138.22
  6. Step 6: Final answer
    x = 8,913.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.