Home / 2,780.01-4,170.66-1,219.95

Finding the Fourth Proportional to 2,780.01, 4,170.66 and 1,219.95

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Solution

The fourth proportional to 2,780.01, 4,170.66 and 1,219.95 is: 1,830.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,780.01 : 4,170.66 = 1,219.95 : x
  2. Step 2: Convert to fraction form
    2,780.01/4,170.66 = 1,219.95/x
  3. Step 3: Cross multiply
    2,780.01x = 4,170.66 × 1,219.95
  4. Step 4: Simplify right side
    2,780.01x = 5,087,996.67
  5. Step 5: Solve for x
    x = 5,087,996.67/2,780.01
  6. Step 6: Final answer
    x = 1,830.21

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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.