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Finding the Fourth Proportional to 6,689.87, 10,034.81 and 2,791.55

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Solution

The fourth proportional to 6,689.87, 10,034.81 and 2,791.55 is: 4,187.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,689.87 : 10,034.81 = 2,791.55 : x
  2. Step 2: Convert to fraction form
    6,689.87/10,034.81 = 2,791.55/x
  3. Step 3: Cross multiply
    6,689.87x = 10,034.81 × 2,791.55
  4. Step 4: Simplify right side
    6,689.87x = 28,012,646.86
  5. Step 5: Solve for x
    x = 28,012,646.86/6,689.87
  6. Step 6: Final answer
    x = 4,187.32

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1.5x scale

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.