Home / 3,131.25-4,696.89-1,282.55

Finding the Fourth Proportional to 3,131.25, 4,696.89 and 1,282.55

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Solution

The fourth proportional to 3,131.25, 4,696.89 and 1,282.55 is: 1,923.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,131.25 : 4,696.89 = 1,282.55 : x
  2. Step 2: Convert to fraction form
    3,131.25/4,696.89 = 1,282.55/x
  3. Step 3: Cross multiply
    3,131.25x = 4,696.89 × 1,282.55
  4. Step 4: Simplify right side
    3,131.25x = 6,023,972.79
  5. Step 5: Solve for x
    x = 6,023,972.79/3,131.25
  6. Step 6: Final answer
    x = 1,923.82

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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.