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Finding the Fourth Proportional to 7,149.54, 10,724.30 and 1,955.82

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Solution

The fourth proportional to 7,149.54, 10,724.30 and 1,955.82 is: 2,933.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,149.54 : 10,724.30 = 1,955.82 : x
  2. Step 2: Convert to fraction form
    7,149.54/10,724.30 = 1,955.82/x
  3. Step 3: Cross multiply
    7,149.54x = 10,724.30 × 1,955.82
  4. Step 4: Simplify right side
    7,149.54x = 20,974,800.43
  5. Step 5: Solve for x
    x = 20,974,800.43/7,149.54
  6. Step 6: Final answer
    x = 2,933.73

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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.