Home / 1,422.13-2,133.21-556.46

Finding the Fourth Proportional to 1,422.13, 2,133.21 and 556.46

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Solution

The fourth proportional to 1,422.13, 2,133.21 and 556.46 is: 834.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,422.13 : 2,133.21 = 556.46 : x
  2. Step 2: Convert to fraction form
    1,422.13/2,133.21 = 556.46/x
  3. Step 3: Cross multiply
    1,422.13x = 2,133.21 × 556.46
  4. Step 4: Simplify right side
    1,422.13x = 1,187,046.04
  5. Step 5: Solve for x
    x = 1,187,046.04/1,422.13
  6. Step 6: Final answer
    x = 834.70

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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.