Home / 3,979.96-5,492.38-2,211.60

Finding the Fourth Proportional to 3,979.96, 5,492.38 and 2,211.60

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Solution

The fourth proportional to 3,979.96, 5,492.38 and 2,211.60 is: 3,052.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,979.96 : 5,492.38 = 2,211.60 : x
  2. Step 2: Convert to fraction form
    3,979.96/5,492.38 = 2,211.60/x
  3. Step 3: Cross multiply
    3,979.96x = 5,492.38 × 2,211.60
  4. Step 4: Simplify right side
    3,979.96x = 12,146,947.61
  5. Step 5: Solve for x
    x = 12,146,947.61/3,979.96
  6. Step 6: Final answer
    x = 3,052.03

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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.