Home / 2,778.15-4,172.52-1,610.50

Finding the Fourth Proportional to 2,778.15, 4,172.52 and 1,610.50

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Solution

The fourth proportional to 2,778.15, 4,172.52 and 1,610.50 is: 2,418.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,778.15 : 4,172.52 = 1,610.50 : x
  2. Step 2: Convert to fraction form
    2,778.15/4,172.52 = 1,610.50/x
  3. Step 3: Cross multiply
    2,778.15x = 4,172.52 × 1,610.50
  4. Step 4: Simplify right side
    2,778.15x = 6,719,843.46
  5. Step 5: Solve for x
    x = 6,719,843.46/2,778.15
  6. Step 6: Final answer
    x = 2,418.82

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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.