Home / 2,579.84-3,871.20-1,118.96

Finding the Fourth Proportional to 2,579.84, 3,871.20 and 1,118.96

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Solution

The fourth proportional to 2,579.84, 3,871.20 and 1,118.96 is: 1,679.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,579.84 : 3,871.20 = 1,118.96 : x
  2. Step 2: Convert to fraction form
    2,579.84/3,871.20 = 1,118.96/x
  3. Step 3: Cross multiply
    2,579.84x = 3,871.20 × 1,118.96
  4. Step 4: Simplify right side
    2,579.84x = 4,331,717.95
  5. Step 5: Solve for x
    x = 4,331,717.95/2,579.84
  6. Step 6: Final answer
    x = 1,679.06

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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.