Home / 1,791.29-2,687.34-621.32

Finding the Fourth Proportional to 1,791.29, 2,687.34 and 621.32

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Solution

The fourth proportional to 1,791.29, 2,687.34 and 621.32 is: 932.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,791.29 : 2,687.34 = 621.32 : x
  2. Step 2: Convert to fraction form
    1,791.29/2,687.34 = 621.32/x
  3. Step 3: Cross multiply
    1,791.29x = 2,687.34 × 621.32
  4. Step 4: Simplify right side
    1,791.29x = 1,669,686.98
  5. Step 5: Solve for x
    x = 1,669,686.98/1,791.29
  6. Step 6: Final answer
    x = 932.11

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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.