Home / 8,139.07-11,227.85-5,481.86

Finding the Fourth Proportional to 8,139.07, 11,227.85 and 5,481.86

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Solution

The fourth proportional to 8,139.07, 11,227.85 and 5,481.86 is: 7,562.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,139.07 : 11,227.85 = 5,481.86 : x
  2. Step 2: Convert to fraction form
    8,139.07/11,227.85 = 5,481.86/x
  3. Step 3: Cross multiply
    8,139.07x = 11,227.85 × 5,481.86
  4. Step 4: Simplify right side
    8,139.07x = 61,549,501.80
  5. Step 5: Solve for x
    x = 61,549,501.80/8,139.07
  6. Step 6: Final answer
    x = 7,562.23

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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.