Home / 6,511.38-8,985.96-3,679.38

Finding the Fourth Proportional to 6,511.38, 8,985.96 and 3,679.38

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Solution

The fourth proportional to 6,511.38, 8,985.96 and 3,679.38 is: 5,077.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,511.38 : 8,985.96 = 3,679.38 : x
  2. Step 2: Convert to fraction form
    6,511.38/8,985.96 = 3,679.38/x
  3. Step 3: Cross multiply
    6,511.38x = 8,985.96 × 3,679.38
  4. Step 4: Simplify right side
    6,511.38x = 33,062,761.50
  5. Step 5: Solve for x
    x = 33,062,761.50/6,511.38
  6. Step 6: Final answer
    x = 5,077.69

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Half scale
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Double scale
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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.