Home / 5,142.87-7,718.31-2,370.78

Finding the Fourth Proportional to 5,142.87, 7,718.31 and 2,370.78

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Solution

The fourth proportional to 5,142.87, 7,718.31 and 2,370.78 is: 3,558.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,142.87 : 7,718.31 = 2,370.78 : x
  2. Step 2: Convert to fraction form
    5,142.87/7,718.31 = 2,370.78/x
  3. Step 3: Cross multiply
    5,142.87x = 7,718.31 × 2,370.78
  4. Step 4: Simplify right side
    5,142.87x = 18,298,414.98
  5. Step 5: Solve for x
    x = 18,298,414.98/5,142.87
  6. Step 6: Final answer
    x = 3,558.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.