Home / 7,679.09-11,520.12-2,998.91

Finding the Fourth Proportional to 7,679.09, 11,520.12 and 2,998.91

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Solution

The fourth proportional to 7,679.09, 11,520.12 and 2,998.91 is: 4,498.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,679.09 : 11,520.12 = 2,998.91 : x
  2. Step 2: Convert to fraction form
    7,679.09/11,520.12 = 2,998.91/x
  3. Step 3: Cross multiply
    7,679.09x = 11,520.12 × 2,998.91
  4. Step 4: Simplify right side
    7,679.09x = 34,547,745.47
  5. Step 5: Solve for x
    x = 34,547,745.47/7,679.09
  6. Step 6: Final answer
    x = 4,498.94

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Half scale
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Double scale
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Similar ratio
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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.