Home / 3,112.43-4,669.25-1,812.38

Finding the Fourth Proportional to 3,112.43, 4,669.25 and 1,812.38

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Solution

The fourth proportional to 3,112.43, 4,669.25 and 1,812.38 is: 2,718.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,112.43 : 4,669.25 = 1,812.38 : x
  2. Step 2: Convert to fraction form
    3,112.43/4,669.25 = 1,812.38/x
  3. Step 3: Cross multiply
    3,112.43x = 4,669.25 × 1,812.38
  4. Step 4: Simplify right side
    3,112.43x = 8,462,422.91
  5. Step 5: Solve for x
    x = 8,462,422.91/3,112.43
  6. Step 6: Final answer
    x = 2,718.92

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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.