Home / 8,385.99-11,575.09-5,591.49

Finding the Fourth Proportional to 8,385.99, 11,575.09 and 5,591.49

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Solution

The fourth proportional to 8,385.99, 11,575.09 and 5,591.49 is: 7,717.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,385.99 : 11,575.09 = 5,591.49 : x
  2. Step 2: Convert to fraction form
    8,385.99/11,575.09 = 5,591.49/x
  3. Step 3: Cross multiply
    8,385.99x = 11,575.09 × 5,591.49
  4. Step 4: Simplify right side
    8,385.99x = 64,721,942.60
  5. Step 5: Solve for x
    x = 64,721,942.60/8,385.99
  6. Step 6: Final answer
    x = 7,717.87

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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.