Home / 3,081.60-4,251.60-1,962.72

Finding the Fourth Proportional to 3,081.60, 4,251.60 and 1,962.72

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Solution

The fourth proportional to 3,081.60, 4,251.60 and 1,962.72 is: 2,707.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,081.60 : 4,251.60 = 1,962.72 : x
  2. Step 2: Convert to fraction form
    3,081.60/4,251.60 = 1,962.72/x
  3. Step 3: Cross multiply
    3,081.60x = 4,251.60 × 1,962.72
  4. Step 4: Simplify right side
    3,081.60x = 8,344,700.35
  5. Step 5: Solve for x
    x = 8,344,700.35/3,081.60
  6. Step 6: Final answer
    x = 2,707.91

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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.