Home / 1,439.50-2,159.26-789.88

Finding the Fourth Proportional to 1,439.50, 2,159.26 and 789.88

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Solution

The fourth proportional to 1,439.50, 2,159.26 and 789.88 is: 1,184.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,439.50 : 2,159.26 = 789.88 : x
  2. Step 2: Convert to fraction form
    1,439.50/2,159.26 = 789.88/x
  3. Step 3: Cross multiply
    1,439.50x = 2,159.26 × 789.88
  4. Step 4: Simplify right side
    1,439.50x = 1,705,556.29
  5. Step 5: Solve for x
    x = 1,705,556.29/1,439.50
  6. Step 6: Final answer
    x = 1,184.83

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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.