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Finding the Fourth Proportional to 5,490.44, 8,235.65 and 1,330.44

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Solution

The fourth proportional to 5,490.44, 8,235.65 and 1,330.44 is: 1,995.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,490.44 : 8,235.65 = 1,330.44 : x
  2. Step 2: Convert to fraction form
    5,490.44/8,235.65 = 1,330.44/x
  3. Step 3: Cross multiply
    5,490.44x = 8,235.65 × 1,330.44
  4. Step 4: Simplify right side
    5,490.44x = 10,957,010.63
  5. Step 5: Solve for x
    x = 10,957,010.63/5,490.44
  6. Step 6: Final answer
    x = 1,995.65

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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.