Home / 3,123.11-4,310.82-1,865.04

Finding the Fourth Proportional to 3,123.11, 4,310.82 and 1,865.04

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Solution

The fourth proportional to 3,123.11, 4,310.82 and 1,865.04 is: 2,574.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,123.11 : 4,310.82 = 1,865.04 : x
  2. Step 2: Convert to fraction form
    3,123.11/4,310.82 = 1,865.04/x
  3. Step 3: Cross multiply
    3,123.11x = 4,310.82 × 1,865.04
  4. Step 4: Simplify right side
    3,123.11x = 8,039,851.73
  5. Step 5: Solve for x
    x = 8,039,851.73/3,123.11
  6. Step 6: Final answer
    x = 2,574.31

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1.5x scale

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.