Home / 5,540.70-8,311.05-1,645.10

Finding the Fourth Proportional to 5,540.70, 8,311.05 and 1,645.10

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Solution

The fourth proportional to 5,540.70, 8,311.05 and 1,645.10 is: 2,467.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,540.70 : 8,311.05 = 1,645.10 : x
  2. Step 2: Convert to fraction form
    5,540.70/8,311.05 = 1,645.10/x
  3. Step 3: Cross multiply
    5,540.70x = 8,311.05 × 1,645.10
  4. Step 4: Simplify right side
    5,540.70x = 13,672,508.36
  5. Step 5: Solve for x
    x = 13,672,508.36/5,540.70
  6. Step 6: Final answer
    x = 2,467.65

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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.