Home / 3,981.60-5,494.58-2,213.19

Finding the Fourth Proportional to 3,981.60, 5,494.58 and 2,213.19

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Solution

The fourth proportional to 3,981.60, 5,494.58 and 2,213.19 is: 3,054.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,981.60 : 5,494.58 = 2,213.19 : x
  2. Step 2: Convert to fraction form
    3,981.60/5,494.58 = 2,213.19/x
  3. Step 3: Cross multiply
    3,981.60x = 5,494.58 × 2,213.19
  4. Step 4: Simplify right side
    3,981.60x = 12,160,538.44
  5. Step 5: Solve for x
    x = 12,160,538.44/3,981.60
  6. Step 6: Final answer
    x = 3,054.19

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Half scale
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Double scale
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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.