Home / 3,490.66-5,231.36-2,561.87

Finding the Fourth Proportional to 3,490.66, 5,231.36 and 2,561.87

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Solution

The fourth proportional to 3,490.66, 5,231.36 and 2,561.87 is: 3,839.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,490.66 : 5,231.36 = 2,561.87 : x
  2. Step 2: Convert to fraction form
    3,490.66/5,231.36 = 2,561.87/x
  3. Step 3: Cross multiply
    3,490.66x = 5,231.36 × 2,561.87
  4. Step 4: Simplify right side
    3,490.66x = 13,402,083.73
  5. Step 5: Solve for x
    x = 13,402,083.73/3,490.66
  6. Step 6: Final answer
    x = 3,839.41

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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.