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Finding the Fourth Proportional to 3,098.77, 4,648.13 and 758.79

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Solution

The fourth proportional to 3,098.77, 4,648.13 and 758.79 is: 1,138.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,098.77 : 4,648.13 = 758.79 : x
  2. Step 2: Convert to fraction form
    3,098.77/4,648.13 = 758.79/x
  3. Step 3: Cross multiply
    3,098.77x = 4,648.13 × 758.79
  4. Step 4: Simplify right side
    3,098.77x = 3,526,927.53
  5. Step 5: Solve for x
    x = 3,526,927.53/3,098.77
  6. Step 6: Final answer
    x = 1,138.17

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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.