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Finding the Fourth Proportional to 3,550.31, 5,323.11 and 1,990.46

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Solution

The fourth proportional to 3,550.31, 5,323.11 and 1,990.46 is: 2,984.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,550.31 : 5,323.11 = 1,990.46 : x
  2. Step 2: Convert to fraction form
    3,550.31/5,323.11 = 1,990.46/x
  3. Step 3: Cross multiply
    3,550.31x = 5,323.11 × 1,990.46
  4. Step 4: Simplify right side
    3,550.31x = 10,595,437.53
  5. Step 5: Solve for x
    x = 10,595,437.53/3,550.31
  6. Step 6: Final answer
    x = 2,984.37

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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.