Home / 2,679.62-3,986.99-2,612.66

Finding the Fourth Proportional to 2,679.62, 3,986.99 and 2,612.66

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Solution

The fourth proportional to 2,679.62, 3,986.99 and 2,612.66 is: 3,887.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,679.62 : 3,986.99 = 2,612.66 : x
  2. Step 2: Convert to fraction form
    2,679.62/3,986.99 = 2,612.66/x
  3. Step 3: Cross multiply
    2,679.62x = 3,986.99 × 2,612.66
  4. Step 4: Simplify right side
    2,679.62x = 10,416,626.09
  5. Step 5: Solve for x
    x = 10,416,626.09/2,679.62
  6. Step 6: Final answer
    x = 3,887.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.