Home / 2,079.13-3,118.70-540.13

Finding the Fourth Proportional to 2,079.13, 3,118.70 and 540.13

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Solution

The fourth proportional to 2,079.13, 3,118.70 and 540.13 is: 810.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,079.13 : 3,118.70 = 540.13 : x
  2. Step 2: Convert to fraction form
    2,079.13/3,118.70 = 540.13/x
  3. Step 3: Cross multiply
    2,079.13x = 3,118.70 × 540.13
  4. Step 4: Simplify right side
    2,079.13x = 1,684,503.43
  5. Step 5: Solve for x
    x = 1,684,503.43/2,079.13
  6. Step 6: Final answer
    x = 810.20

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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.