Home / 2,819.60-3,891.06-1,560.58

Finding the Fourth Proportional to 2,819.60, 3,891.06 and 1,560.58

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Solution

The fourth proportional to 2,819.60, 3,891.06 and 1,560.58 is: 2,153.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,819.60 : 3,891.06 = 1,560.58 : x
  2. Step 2: Convert to fraction form
    2,819.60/3,891.06 = 1,560.58/x
  3. Step 3: Cross multiply
    2,819.60x = 3,891.06 × 1,560.58
  4. Step 4: Simplify right side
    2,819.60x = 6,072,310.41
  5. Step 5: Solve for x
    x = 6,072,310.41/2,819.60
  6. Step 6: Final answer
    x = 2,153.61

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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.