Home / 8,155.77-11,170.38-7,676.91

Finding the Fourth Proportional to 8,155.77, 11,170.38 and 7,676.91

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Solution

The fourth proportional to 8,155.77, 11,170.38 and 7,676.91 is: 10,514.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,155.77 : 11,170.38 = 7,676.91 : x
  2. Step 2: Convert to fraction form
    8,155.77/11,170.38 = 7,676.91/x
  3. Step 3: Cross multiply
    8,155.77x = 11,170.38 × 7,676.91
  4. Step 4: Simplify right side
    8,155.77x = 85,754,001.93
  5. Step 5: Solve for x
    x = 85,754,001.93/8,155.77
  6. Step 6: Final answer
    x = 10,514.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.