Home / 8,125.31-11,207.16-5,138.24

Finding the Fourth Proportional to 8,125.31, 11,207.16 and 5,138.24

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Solution

The fourth proportional to 8,125.31, 11,207.16 and 5,138.24 is: 7,087.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,125.31 : 11,207.16 = 5,138.24 : x
  2. Step 2: Convert to fraction form
    8,125.31/11,207.16 = 5,138.24/x
  3. Step 3: Cross multiply
    8,125.31x = 11,207.16 × 5,138.24
  4. Step 4: Simplify right side
    8,125.31x = 57,585,021.76
  5. Step 5: Solve for x
    x = 57,585,021.76/8,125.31
  6. Step 6: Final answer
    x = 7,087.11

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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.