Home / 2,657.66-3,986.91-1,618.43

Finding the Fourth Proportional to 2,657.66, 3,986.91 and 1,618.43

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Solution

The fourth proportional to 2,657.66, 3,986.91 and 1,618.43 is: 2,427.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,657.66 : 3,986.91 = 1,618.43 : x
  2. Step 2: Convert to fraction form
    2,657.66/3,986.91 = 1,618.43/x
  3. Step 3: Cross multiply
    2,657.66x = 3,986.91 × 1,618.43
  4. Step 4: Simplify right side
    2,657.66x = 6,452,514.82
  5. Step 5: Solve for x
    x = 6,452,514.82/2,657.66
  6. Step 6: Final answer
    x = 2,427.90

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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.