Home / 2,579.13-3,868.70-1,118.25

Finding the Fourth Proportional to 2,579.13, 3,868.70 and 1,118.25

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Solution

The fourth proportional to 2,579.13, 3,868.70 and 1,118.25 is: 1,677.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,579.13 : 3,868.70 = 1,118.25 : x
  2. Step 2: Convert to fraction form
    2,579.13/3,868.70 = 1,118.25/x
  3. Step 3: Cross multiply
    2,579.13x = 3,868.70 × 1,118.25
  4. Step 4: Simplify right side
    2,579.13x = 4,326,168.18
  5. Step 5: Solve for x
    x = 4,326,168.18/2,579.13
  6. Step 6: Final answer
    x = 1,677.38

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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.