Home / 2,812.20-3,881.31-1,633.95

Finding the Fourth Proportional to 2,812.20, 3,881.31 and 1,633.95

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Solution

The fourth proportional to 2,812.20, 3,881.31 and 1,633.95 is: 2,255.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,812.20 : 3,881.31 = 1,633.95 : x
  2. Step 2: Convert to fraction form
    2,812.20/3,881.31 = 1,633.95/x
  3. Step 3: Cross multiply
    2,812.20x = 3,881.31 × 1,633.95
  4. Step 4: Simplify right side
    2,812.20x = 6,341,876.18
  5. Step 5: Solve for x
    x = 6,341,876.18/2,812.20
  6. Step 6: Final answer
    x = 2,255.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.