Home / 8,127.36-11,188.80-7,269.12

Finding the Fourth Proportional to 8,127.36, 11,188.80 and 7,269.12

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Solution

The fourth proportional to 8,127.36, 11,188.80 and 7,269.12 is: 10,007.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,127.36 : 11,188.80 = 7,269.12 : x
  2. Step 2: Convert to fraction form
    8,127.36/11,188.80 = 7,269.12/x
  3. Step 3: Cross multiply
    8,127.36x = 11,188.80 × 7,269.12
  4. Step 4: Simplify right side
    8,127.36x = 81,332,729.86
  5. Step 5: Solve for x
    x = 81,332,729.86/8,127.36
  6. Step 6: Final answer
    x = 10,007.28

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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.