Home / 1,982.34-2,729.70-1,872.18

Finding the Fourth Proportional to 1,982.34, 2,729.70 and 1,872.18

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Solution

The fourth proportional to 1,982.34, 2,729.70 and 1,872.18 is: 2,578.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,982.34 : 2,729.70 = 1,872.18 : x
  2. Step 2: Convert to fraction form
    1,982.34/2,729.70 = 1,872.18/x
  3. Step 3: Cross multiply
    1,982.34x = 2,729.70 × 1,872.18
  4. Step 4: Simplify right side
    1,982.34x = 5,110,489.75
  5. Step 5: Solve for x
    x = 5,110,489.75/1,982.34
  6. Step 6: Final answer
    x = 2,578.01

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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.