Home / 1,601.11-2,401.39-505.31

Finding the Fourth Proportional to 1,601.11, 2,401.39 and 505.31

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Solution

The fourth proportional to 1,601.11, 2,401.39 and 505.31 is: 757.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,601.11 : 2,401.39 = 505.31 : x
  2. Step 2: Convert to fraction form
    1,601.11/2,401.39 = 505.31/x
  3. Step 3: Cross multiply
    1,601.11x = 2,401.39 × 505.31
  4. Step 4: Simplify right side
    1,601.11x = 1,213,453.02
  5. Step 5: Solve for x
    x = 1,213,453.02/1,601.11
  6. Step 6: Final answer
    x = 757.88

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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.