Home / 4,257.60-5,876.40-2,687.80

Finding the Fourth Proportional to 4,257.60, 5,876.40 and 2,687.80

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Solution

The fourth proportional to 4,257.60, 5,876.40 and 2,687.80 is: 3,709.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,257.60 : 5,876.40 = 2,687.80 : x
  2. Step 2: Convert to fraction form
    4,257.60/5,876.40 = 2,687.80/x
  3. Step 3: Cross multiply
    4,257.60x = 5,876.40 × 2,687.80
  4. Step 4: Simplify right side
    4,257.60x = 15,794,587.92
  5. Step 5: Solve for x
    x = 15,794,587.92/4,257.60
  6. Step 6: Final answer
    x = 3,709.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.