Home / 3,128.18-4,687.61-2,851.57

Finding the Fourth Proportional to 3,128.18, 4,687.61 and 2,851.57

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Solution

The fourth proportional to 3,128.18, 4,687.61 and 2,851.57 is: 4,273.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.18 : 4,687.61 = 2,851.57 : x
  2. Step 2: Convert to fraction form
    3,128.18/4,687.61 = 2,851.57/x
  3. Step 3: Cross multiply
    3,128.18x = 4,687.61 × 2,851.57
  4. Step 4: Simplify right side
    3,128.18x = 13,367,048.05
  5. Step 5: Solve for x
    x = 13,367,048.05/3,128.18
  6. Step 6: Final answer
    x = 4,273.11

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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.