Home / 2,819.86-3,891.35-1,560.84

Finding the Fourth Proportional to 2,819.86, 3,891.35 and 1,560.84

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Solution

The fourth proportional to 2,819.86, 3,891.35 and 1,560.84 is: 2,153.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,819.86 : 3,891.35 = 1,560.84 : x
  2. Step 2: Convert to fraction form
    2,819.86/3,891.35 = 1,560.84/x
  3. Step 3: Cross multiply
    2,819.86x = 3,891.35 × 1,560.84
  4. Step 4: Simplify right side
    2,819.86x = 6,073,778.64
  5. Step 5: Solve for x
    x = 6,073,778.64/2,819.86
  6. Step 6: Final answer
    x = 2,153.93

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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.