Home / 3,478.22-5,217.65-1,257.61

Finding the Fourth Proportional to 3,478.22, 5,217.65 and 1,257.61

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Solution

The fourth proportional to 3,478.22, 5,217.65 and 1,257.61 is: 1,886.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,478.22 : 5,217.65 = 1,257.61 : x
  2. Step 2: Convert to fraction form
    3,478.22/5,217.65 = 1,257.61/x
  3. Step 3: Cross multiply
    3,478.22x = 5,217.65 × 1,257.61
  4. Step 4: Simplify right side
    3,478.22x = 6,561,744.42
  5. Step 5: Solve for x
    x = 6,561,744.42/3,478.22
  6. Step 6: Final answer
    x = 1,886.53

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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.