Home / 2,371.29-3,270.40-1,780.80

Finding the Fourth Proportional to 2,371.29, 3,270.40 and 1,780.80

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Solution

The fourth proportional to 2,371.29, 3,270.40 and 1,780.80 is: 2,456.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,371.29 : 3,270.40 = 1,780.80 : x
  2. Step 2: Convert to fraction form
    2,371.29/3,270.40 = 1,780.80/x
  3. Step 3: Cross multiply
    2,371.29x = 3,270.40 × 1,780.80
  4. Step 4: Simplify right side
    2,371.29x = 5,823,928.32
  5. Step 5: Solve for x
    x = 5,823,928.32/2,371.29
  6. Step 6: Final answer
    x = 2,456.02

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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.