Home / 3,418.60-5,128.08-1,959.16

Finding the Fourth Proportional to 3,418.60, 5,128.08 and 1,959.16

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Solution

The fourth proportional to 3,418.60, 5,128.08 and 1,959.16 is: 2,938.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,418.60 : 5,128.08 = 1,959.16 : x
  2. Step 2: Convert to fraction form
    3,418.60/5,128.08 = 1,959.16/x
  3. Step 3: Cross multiply
    3,418.60x = 5,128.08 × 1,959.16
  4. Step 4: Simplify right side
    3,418.60x = 10,046,729.21
  5. Step 5: Solve for x
    x = 10,046,729.21/3,418.60
  6. Step 6: Final answer
    x = 2,938.84

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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.