Home / 8,809.25-13,187.82-7,715.75

Finding the Fourth Proportional to 8,809.25, 13,187.82 and 7,715.75

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Solution

The fourth proportional to 8,809.25, 13,187.82 and 7,715.75 is: 11,550.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,809.25 : 13,187.82 = 7,715.75 : x
  2. Step 2: Convert to fraction form
    8,809.25/13,187.82 = 7,715.75/x
  3. Step 3: Cross multiply
    8,809.25x = 13,187.82 × 7,715.75
  4. Step 4: Simplify right side
    8,809.25x = 101,753,922.17
  5. Step 5: Solve for x
    x = 101,753,922.17/8,809.25
  6. Step 6: Final answer
    x = 11,550.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.