Home / 8,129.79-11,207.97-5,144.13

Finding the Fourth Proportional to 8,129.79, 11,207.97 and 5,144.13

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Solution

The fourth proportional to 8,129.79, 11,207.97 and 5,144.13 is: 7,091.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,129.79 : 11,207.97 = 5,144.13 : x
  2. Step 2: Convert to fraction form
    8,129.79/11,207.97 = 5,144.13/x
  3. Step 3: Cross multiply
    8,129.79x = 11,207.97 × 5,144.13
  4. Step 4: Simplify right side
    8,129.79x = 57,655,254.72
  5. Step 5: Solve for x
    x = 57,655,254.72/8,129.79
  6. Step 6: Final answer
    x = 7,091.85

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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.