Home / 2,079.35-3,118.77-1,299.42

Finding the Fourth Proportional to 2,079.35, 3,118.77 and 1,299.42

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Solution

The fourth proportional to 2,079.35, 3,118.77 and 1,299.42 is: 1,948.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,079.35 : 3,118.77 = 1,299.42 : x
  2. Step 2: Convert to fraction form
    2,079.35/3,118.77 = 1,299.42/x
  3. Step 3: Cross multiply
    2,079.35x = 3,118.77 × 1,299.42
  4. Step 4: Simplify right side
    2,079.35x = 4,052,592.11
  5. Step 5: Solve for x
    x = 4,052,592.11/2,079.35
  6. Step 6: Final answer
    x = 1,948.97

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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.