Home / 2,521.20-3,780.96-1,221.84

Finding the Fourth Proportional to 2,521.20, 3,780.96 and 1,221.84

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Solution

The fourth proportional to 2,521.20, 3,780.96 and 1,221.84 is: 1,832.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,521.20 : 3,780.96 = 1,221.84 : x
  2. Step 2: Convert to fraction form
    2,521.20/3,780.96 = 1,221.84/x
  3. Step 3: Cross multiply
    2,521.20x = 3,780.96 × 1,221.84
  4. Step 4: Simplify right side
    2,521.20x = 4,619,728.17
  5. Step 5: Solve for x
    x = 4,619,728.17/2,521.20
  6. Step 6: Final answer
    x = 1,832.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.