Home / 5,123.05-7,685.60-1,791.63

Finding the Fourth Proportional to 5,123.05, 7,685.60 and 1,791.63

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Solution

The fourth proportional to 5,123.05, 7,685.60 and 1,791.63 is: 2,687.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,123.05 : 7,685.60 = 1,791.63 : x
  2. Step 2: Convert to fraction form
    5,123.05/7,685.60 = 1,791.63/x
  3. Step 3: Cross multiply
    5,123.05x = 7,685.60 × 1,791.63
  4. Step 4: Simplify right side
    5,123.05x = 13,769,755.90
  5. Step 5: Solve for x
    x = 13,769,755.90/5,123.05
  6. Step 6: Final answer
    x = 2,687.81

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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.