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Finding the Fourth Proportional to 5,279.96, 7,916.74 and 3,634.70

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Solution

The fourth proportional to 5,279.96, 7,916.74 and 3,634.70 is: 5,449.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,279.96 : 7,916.74 = 3,634.70 : x
  2. Step 2: Convert to fraction form
    5,279.96/7,916.74 = 3,634.70/x
  3. Step 3: Cross multiply
    5,279.96x = 7,916.74 × 3,634.70
  4. Step 4: Simplify right side
    5,279.96x = 28,774,974.88
  5. Step 5: Solve for x
    x = 28,774,974.88/5,279.96
  6. Step 6: Final answer
    x = 5,449.85

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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.