Home / 2,780.85-4,172.49-1,482

Finding the Fourth Proportional to 2,780.85, 4,172.49 and 1,482

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Solution

The fourth proportional to 2,780.85, 4,172.49 and 1,482 is: 2,223.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,780.85 : 4,172.49 = 1,482 : x
  2. Step 2: Convert to fraction form
    2,780.85/4,172.49 = 1,482/x
  3. Step 3: Cross multiply
    2,780.85x = 4,172.49 × 1,482
  4. Step 4: Simplify right side
    2,780.85x = 6,183,630.18
  5. Step 5: Solve for x
    x = 6,183,630.18/2,780.85
  6. Step 6: Final answer
    x = 2,223.65

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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.