Home / 1,780.89-2,454.30-1,282.65

Finding the Fourth Proportional to 1,780.89, 2,454.30 and 1,282.65

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Solution

The fourth proportional to 1,780.89, 2,454.30 and 1,282.65 is: 1,767.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,780.89 : 2,454.30 = 1,282.65 : x
  2. Step 2: Convert to fraction form
    1,780.89/2,454.30 = 1,282.65/x
  3. Step 3: Cross multiply
    1,780.89x = 2,454.30 × 1,282.65
  4. Step 4: Simplify right side
    1,780.89x = 3,148,007.90
  5. Step 5: Solve for x
    x = 3,148,007.90/1,780.89
  6. Step 6: Final answer
    x = 1,767.66

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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.