Home / 8,177.12-11,255.92-7,127.36

Finding the Fourth Proportional to 8,177.12, 11,255.92 and 7,127.36

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Solution

The fourth proportional to 8,177.12, 11,255.92 and 7,127.36 is: 9,810.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,177.12 : 11,255.92 = 7,127.36 : x
  2. Step 2: Convert to fraction form
    8,177.12/11,255.92 = 7,127.36/x
  3. Step 3: Cross multiply
    8,177.12x = 11,255.92 × 7,127.36
  4. Step 4: Simplify right side
    8,177.12x = 80,224,993.97
  5. Step 5: Solve for x
    x = 80,224,993.97/8,177.12
  6. Step 6: Final answer
    x = 9,810.91

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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.