Home / 1,422.33-1,960.80-1,107.06

Finding the Fourth Proportional to 1,422.33, 1,960.80 and 1,107.06

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Solution

The fourth proportional to 1,422.33, 1,960.80 and 1,107.06 is: 1,526.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,422.33 : 1,960.80 = 1,107.06 : x
  2. Step 2: Convert to fraction form
    1,422.33/1,960.80 = 1,107.06/x
  3. Step 3: Cross multiply
    1,422.33x = 1,960.80 × 1,107.06
  4. Step 4: Simplify right side
    1,422.33x = 2,170,723.25
  5. Step 5: Solve for x
    x = 2,170,723.25/1,422.33
  6. Step 6: Final answer
    x = 1,526.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.