Home / 5,490.55-8,235.85-1,330.55

Finding the Fourth Proportional to 5,490.55, 8,235.85 and 1,330.55

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Solution

The fourth proportional to 5,490.55, 8,235.85 and 1,330.55 is: 1,995.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,490.55 : 8,235.85 = 1,330.55 : x
  2. Step 2: Convert to fraction form
    5,490.55/8,235.85 = 1,330.55/x
  3. Step 3: Cross multiply
    5,490.55x = 8,235.85 × 1,330.55
  4. Step 4: Simplify right side
    5,490.55x = 10,958,203.56
  5. Step 5: Solve for x
    x = 10,958,203.56/5,490.55
  6. Step 6: Final answer
    x = 1,995.83

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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.