Home / 1,422.18-2,133.60-448.28

Finding the Fourth Proportional to 1,422.18, 2,133.60 and 448.28

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Solution

The fourth proportional to 1,422.18, 2,133.60 and 448.28 is: 672.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,422.18 : 2,133.60 = 448.28 : x
  2. Step 2: Convert to fraction form
    1,422.18/2,133.60 = 448.28/x
  3. Step 3: Cross multiply
    1,422.18x = 2,133.60 × 448.28
  4. Step 4: Simplify right side
    1,422.18x = 956,439.54
  5. Step 5: Solve for x
    x = 956,439.54/1,422.18
  6. Step 6: Final answer
    x = 672.52

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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.