Home / 1,378.60-1,902.18-1,046.44

Finding the Fourth Proportional to 1,378.60, 1,902.18 and 1,046.44

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Solution

The fourth proportional to 1,378.60, 1,902.18 and 1,046.44 is: 1,443.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378.60 : 1,902.18 = 1,046.44 : x
  2. Step 2: Convert to fraction form
    1,378.60/1,902.18 = 1,046.44/x
  3. Step 3: Cross multiply
    1,378.60x = 1,902.18 × 1,046.44
  4. Step 4: Simplify right side
    1,378.60x = 1,990,517.24
  5. Step 5: Solve for x
    x = 1,990,517.24/1,378.60
  6. Step 6: Final answer
    x = 1,443.87

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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.