Home / 2,780.17-3,836.48-1,521.22

Finding the Fourth Proportional to 2,780.17, 3,836.48 and 1,521.22

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Solution

The fourth proportional to 2,780.17, 3,836.48 and 1,521.22 is: 2,099.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,780.17 : 3,836.48 = 1,521.22 : x
  2. Step 2: Convert to fraction form
    2,780.17/3,836.48 = 1,521.22/x
  3. Step 3: Cross multiply
    2,780.17x = 3,836.48 × 1,521.22
  4. Step 4: Simplify right side
    2,780.17x = 5,836,116.85
  5. Step 5: Solve for x
    x = 5,836,116.85/2,780.17
  6. Step 6: Final answer
    x = 2,099.20

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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.