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Finding the Fourth Proportional to 5,640.74, 8,453.92 and 2,679.18

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Solution

The fourth proportional to 5,640.74, 8,453.92 and 2,679.18 is: 4,015.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,640.74 : 8,453.92 = 2,679.18 : x
  2. Step 2: Convert to fraction form
    5,640.74/8,453.92 = 2,679.18/x
  3. Step 3: Cross multiply
    5,640.74x = 8,453.92 × 2,679.18
  4. Step 4: Simplify right side
    5,640.74x = 22,649,573.39
  5. Step 5: Solve for x
    x = 22,649,573.39/5,640.74
  6. Step 6: Final answer
    x = 4,015.35

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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.