Home / 2,629.82-3,962.84-2,177.78

Finding the Fourth Proportional to 2,629.82, 3,962.84 and 2,177.78

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Solution

The fourth proportional to 2,629.82, 3,962.84 and 2,177.78 is: 3,281.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,629.82 : 3,962.84 = 2,177.78 : x
  2. Step 2: Convert to fraction form
    2,629.82/3,962.84 = 2,177.78/x
  3. Step 3: Cross multiply
    2,629.82x = 3,962.84 × 2,177.78
  4. Step 4: Simplify right side
    2,629.82x = 8,630,162.99
  5. Step 5: Solve for x
    x = 8,630,162.99/2,629.82
  6. Step 6: Final answer
    x = 3,281.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.