Home / 4,179.20-6,269.70-1,257.80

Finding the Fourth Proportional to 4,179.20, 6,269.70 and 1,257.80

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Solution

The fourth proportional to 4,179.20, 6,269.70 and 1,257.80 is: 1,886.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,179.20 : 6,269.70 = 1,257.80 : x
  2. Step 2: Convert to fraction form
    4,179.20/6,269.70 = 1,257.80/x
  3. Step 3: Cross multiply
    4,179.20x = 6,269.70 × 1,257.80
  4. Step 4: Simplify right side
    4,179.20x = 7,886,028.66
  5. Step 5: Solve for x
    x = 7,886,028.66/4,179.20
  6. Step 6: Final answer
    x = 1,886.97

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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.