Home / 1,422.14-2,132.80-556.26

Finding the Fourth Proportional to 1,422.14, 2,132.80 and 556.26

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Solution

The fourth proportional to 1,422.14, 2,132.80 and 556.26 is: 834.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,422.14 : 2,132.80 = 556.26 : x
  2. Step 2: Convert to fraction form
    1,422.14/2,132.80 = 556.26/x
  3. Step 3: Cross multiply
    1,422.14x = 2,132.80 × 556.26
  4. Step 4: Simplify right side
    1,422.14x = 1,186,391.33
  5. Step 5: Solve for x
    x = 1,186,391.33/1,422.14
  6. Step 6: Final answer
    x = 834.23

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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.