Home / 2,679.79-4,020.32-1,118.93

Finding the Fourth Proportional to 2,679.79, 4,020.32 and 1,118.93

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Solution

The fourth proportional to 2,679.79, 4,020.32 and 1,118.93 is: 1,678.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,679.79 : 4,020.32 = 1,118.93 : x
  2. Step 2: Convert to fraction form
    2,679.79/4,020.32 = 1,118.93/x
  3. Step 3: Cross multiply
    2,679.79x = 4,020.32 × 1,118.93
  4. Step 4: Simplify right side
    2,679.79x = 4,498,436.56
  5. Step 5: Solve for x
    x = 4,498,436.56/2,679.79
  6. Step 6: Final answer
    x = 1,678.65

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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.