Home / 1,394.10-1,912.84-1,381.04

Finding the Fourth Proportional to 1,394.10, 1,912.84 and 1,381.04

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Solution

The fourth proportional to 1,394.10, 1,912.84 and 1,381.04 is: 1,894.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,394.10 : 1,912.84 = 1,381.04 : x
  2. Step 2: Convert to fraction form
    1,394.10/1,912.84 = 1,381.04/x
  3. Step 3: Cross multiply
    1,394.10x = 1,912.84 × 1,381.04
  4. Step 4: Simplify right side
    1,394.10x = 2,641,708.55
  5. Step 5: Solve for x
    x = 2,641,708.55/1,394.10
  6. Step 6: Final answer
    x = 1,894.92

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.