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Finding the Fourth Proportional to 1,950.76, 2,691.04 and 1,321.32

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Solution

The fourth proportional to 1,950.76, 2,691.04 and 1,321.32 is: 1,822.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,950.76 : 2,691.04 = 1,321.32 : x
  2. Step 2: Convert to fraction form
    1,950.76/2,691.04 = 1,321.32/x
  3. Step 3: Cross multiply
    1,950.76x = 2,691.04 × 1,321.32
  4. Step 4: Simplify right side
    1,950.76x = 3,555,724.97
  5. Step 5: Solve for x
    x = 3,555,724.97/1,950.76
  6. Step 6: Final answer
    x = 1,822.74

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.