Home / 1,184.24-1,642.70-1,121.96

Finding the Fourth Proportional to 1,184.24, 1,642.70 and 1,121.96

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Solution

The fourth proportional to 1,184.24, 1,642.70 and 1,121.96 is: 1,556.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,184.24 : 1,642.70 = 1,121.96 : x
  2. Step 2: Convert to fraction form
    1,184.24/1,642.70 = 1,121.96/x
  3. Step 3: Cross multiply
    1,184.24x = 1,642.70 × 1,121.96
  4. Step 4: Simplify right side
    1,184.24x = 1,843,029.87
  5. Step 5: Solve for x
    x = 1,843,029.87/1,184.24
  6. Step 6: Final answer
    x = 1,556.30

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.