Home / 2,279.18-3,418.23-1,109.81

Finding the Fourth Proportional to 2,279.18, 3,418.23 and 1,109.81

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Solution

The fourth proportional to 2,279.18, 3,418.23 and 1,109.81 is: 1,664.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,279.18 : 3,418.23 = 1,109.81 : x
  2. Step 2: Convert to fraction form
    2,279.18/3,418.23 = 1,109.81/x
  3. Step 3: Cross multiply
    2,279.18x = 3,418.23 × 1,109.81
  4. Step 4: Simplify right side
    2,279.18x = 3,793,585.84
  5. Step 5: Solve for x
    x = 3,793,585.84/2,279.18
  6. Step 6: Final answer
    x = 1,664.45

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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.