Home / 5,405.40-8,108.10-3,338.55

Finding the Fourth Proportional to 5,405.40, 8,108.10 and 3,338.55

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Solution

The fourth proportional to 5,405.40, 8,108.10 and 3,338.55 is: 5,007.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,405.40 : 8,108.10 = 3,338.55 : x
  2. Step 2: Convert to fraction form
    5,405.40/8,108.10 = 3,338.55/x
  3. Step 3: Cross multiply
    5,405.40x = 8,108.10 × 3,338.55
  4. Step 4: Simplify right side
    5,405.40x = 27,069,297.26
  5. Step 5: Solve for x
    x = 27,069,297.26/5,405.40
  6. Step 6: Final answer
    x = 5,007.83

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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.