Home / 1,422.18-2,133.60-556.50

Finding the Fourth Proportional to 1,422.18, 2,133.60 and 556.50

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Solution

The fourth proportional to 1,422.18, 2,133.60 and 556.50 is: 834.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,422.18 : 2,133.60 = 556.50 : x
  2. Step 2: Convert to fraction form
    1,422.18/2,133.60 = 556.50/x
  3. Step 3: Cross multiply
    1,422.18x = 2,133.60 × 556.50
  4. Step 4: Simplify right side
    1,422.18x = 1,187,348.40
  5. Step 5: Solve for x
    x = 1,187,348.40/1,422.18
  6. Step 6: Final answer
    x = 834.88

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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.