Home / 2,778.17-4,160.77-1,680.57

Finding the Fourth Proportional to 2,778.17, 4,160.77 and 1,680.57

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Solution

The fourth proportional to 2,778.17, 4,160.77 and 1,680.57 is: 2,516.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,778.17 : 4,160.77 = 1,680.57 : x
  2. Step 2: Convert to fraction form
    2,778.17/4,160.77 = 1,680.57/x
  3. Step 3: Cross multiply
    2,778.17x = 4,160.77 × 1,680.57
  4. Step 4: Simplify right side
    2,778.17x = 6,992,472.74
  5. Step 5: Solve for x
    x = 6,992,472.74/2,778.17
  6. Step 6: Final answer
    x = 2,516.93

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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.