Home / 3,947.16-5,447.28-2,618.60

Finding the Fourth Proportional to 3,947.16, 5,447.28 and 2,618.60

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Solution

The fourth proportional to 3,947.16, 5,447.28 and 2,618.60 is: 3,613.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,947.16 : 5,447.28 = 2,618.60 : x
  2. Step 2: Convert to fraction form
    3,947.16/5,447.28 = 2,618.60/x
  3. Step 3: Cross multiply
    3,947.16x = 5,447.28 × 2,618.60
  4. Step 4: Simplify right side
    3,947.16x = 14,264,247.41
  5. Step 5: Solve for x
    x = 14,264,247.41/3,947.16
  6. Step 6: Final answer
    x = 3,613.80

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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.