Home / 3,179.15-4,761.21-1,615.28

Finding the Fourth Proportional to 3,179.15, 4,761.21 and 1,615.28

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Solution

The fourth proportional to 3,179.15, 4,761.21 and 1,615.28 is: 2,419.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,179.15 : 4,761.21 = 1,615.28 : x
  2. Step 2: Convert to fraction form
    3,179.15/4,761.21 = 1,615.28/x
  3. Step 3: Cross multiply
    3,179.15x = 4,761.21 × 1,615.28
  4. Step 4: Simplify right side
    3,179.15x = 7,690,687.29
  5. Step 5: Solve for x
    x = 7,690,687.29/3,179.15
  6. Step 6: Final answer
    x = 2,419.10

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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.