Home / 2,581.24-3,868.98-1,118.20

Finding the Fourth Proportional to 2,581.24, 3,868.98 and 1,118.20

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Solution

The fourth proportional to 2,581.24, 3,868.98 and 1,118.20 is: 1,676.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,581.24 : 3,868.98 = 1,118.20 : x
  2. Step 2: Convert to fraction form
    2,581.24/3,868.98 = 1,118.20/x
  3. Step 3: Cross multiply
    2,581.24x = 3,868.98 × 1,118.20
  4. Step 4: Simplify right side
    2,581.24x = 4,326,293.44
  5. Step 5: Solve for x
    x = 4,326,293.44/2,581.24
  6. Step 6: Final answer
    x = 1,676.05

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1.5x scale

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.