Home / 4,981.68-6,872.44-2,988.80

Finding the Fourth Proportional to 4,981.68, 6,872.44 and 2,988.80

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Solution

The fourth proportional to 4,981.68, 6,872.44 and 2,988.80 is: 4,123.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,981.68 : 6,872.44 = 2,988.80 : x
  2. Step 2: Convert to fraction form
    4,981.68/6,872.44 = 2,988.80/x
  3. Step 3: Cross multiply
    4,981.68x = 6,872.44 × 2,988.80
  4. Step 4: Simplify right side
    4,981.68x = 20,540,348.67
  5. Step 5: Solve for x
    x = 20,540,348.67/4,981.68
  6. Step 6: Final answer
    x = 4,123.18

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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.