Home / 2,819.42-3,890.64-1,560.43

Finding the Fourth Proportional to 2,819.42, 3,890.64 and 1,560.43

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Solution

The fourth proportional to 2,819.42, 3,890.64 and 1,560.43 is: 2,153.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,819.42 : 3,890.64 = 1,560.43 : x
  2. Step 2: Convert to fraction form
    2,819.42/3,890.64 = 1,560.43/x
  3. Step 3: Cross multiply
    2,819.42x = 3,890.64 × 1,560.43
  4. Step 4: Simplify right side
    2,819.42x = 6,071,071.38
  5. Step 5: Solve for x
    x = 6,071,071.38/2,819.42
  6. Step 6: Final answer
    x = 2,153.31

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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.