Home / 2,819.64-3,890.76-1,560.60

Finding the Fourth Proportional to 2,819.64, 3,890.76 and 1,560.60

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Solution

The fourth proportional to 2,819.64, 3,890.76 and 1,560.60 is: 2,153.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,819.64 : 3,890.76 = 1,560.60 : x
  2. Step 2: Convert to fraction form
    2,819.64/3,890.76 = 1,560.60/x
  3. Step 3: Cross multiply
    2,819.64x = 3,890.76 × 1,560.60
  4. Step 4: Simplify right side
    2,819.64x = 6,071,920.06
  5. Step 5: Solve for x
    x = 6,071,920.06/2,819.64
  6. Step 6: Final answer
    x = 2,153.44

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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.