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Finding the Fourth Proportional to 3,791.76, 5,230.63 and 2,610.78

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Solution

The fourth proportional to 3,791.76, 5,230.63 and 2,610.78 is: 3,601.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,791.76 : 5,230.63 = 2,610.78 : x
  2. Step 2: Convert to fraction form
    3,791.76/5,230.63 = 2,610.78/x
  3. Step 3: Cross multiply
    3,791.76x = 5,230.63 × 2,610.78
  4. Step 4: Simplify right side
    3,791.76x = 13,656,024.19
  5. Step 5: Solve for x
    x = 13,656,024.19/3,791.76
  6. Step 6: Final answer
    x = 3,601.50

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1.5x scale

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.