Home / 8,279.36-11,410.56-6,711.20

Finding the Fourth Proportional to 8,279.36, 11,410.56 and 6,711.20

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Solution

The fourth proportional to 8,279.36, 11,410.56 and 6,711.20 is: 9,249.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,279.36 : 11,410.56 = 6,711.20 : x
  2. Step 2: Convert to fraction form
    8,279.36/11,410.56 = 6,711.20/x
  3. Step 3: Cross multiply
    8,279.36x = 11,410.56 × 6,711.20
  4. Step 4: Simplify right side
    8,279.36x = 76,578,550.27
  5. Step 5: Solve for x
    x = 76,578,550.27/8,279.36
  6. Step 6: Final answer
    x = 9,249.33

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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.