Home / 1,519.18-2,279.31-789.24

Finding the Fourth Proportional to 1,519.18, 2,279.31 and 789.24

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Solution

The fourth proportional to 1,519.18, 2,279.31 and 789.24 is: 1,184.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,519.18 : 2,279.31 = 789.24 : x
  2. Step 2: Convert to fraction form
    1,519.18/2,279.31 = 789.24/x
  3. Step 3: Cross multiply
    1,519.18x = 2,279.31 × 789.24
  4. Step 4: Simplify right side
    1,519.18x = 1,798,922.62
  5. Step 5: Solve for x
    x = 1,798,922.62/1,519.18
  6. Step 6: Final answer
    x = 1,184.14

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1.5x scale

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.