Home / 1,982.47-2,738.06-1,351.92

Finding the Fourth Proportional to 1,982.47, 2,738.06 and 1,351.92

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Solution

The fourth proportional to 1,982.47, 2,738.06 and 1,351.92 is: 1,867.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,982.47 : 2,738.06 = 1,351.92 : x
  2. Step 2: Convert to fraction form
    1,982.47/2,738.06 = 1,351.92/x
  3. Step 3: Cross multiply
    1,982.47x = 2,738.06 × 1,351.92
  4. Step 4: Simplify right side
    1,982.47x = 3,701,638.08
  5. Step 5: Solve for x
    x = 3,701,638.08/1,982.47
  6. Step 6: Final answer
    x = 1,867.18

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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.