Home / 3,981.61-5,494.58-2,213.18

Finding the Fourth Proportional to 3,981.61, 5,494.58 and 2,213.18

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Solution

The fourth proportional to 3,981.61, 5,494.58 and 2,213.18 is: 3,054.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,981.61 : 5,494.58 = 2,213.18 : x
  2. Step 2: Convert to fraction form
    3,981.61/5,494.58 = 2,213.18/x
  3. Step 3: Cross multiply
    3,981.61x = 5,494.58 × 2,213.18
  4. Step 4: Simplify right side
    3,981.61x = 12,160,461.56
  5. Step 5: Solve for x
    x = 12,160,461.56/3,981.61
  6. Step 6: Final answer
    x = 3,054.16

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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.