Home / 1,422.36-2,133.45-382.32

Finding the Fourth Proportional to 1,422.36, 2,133.45 and 382.32

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Solution

The fourth proportional to 1,422.36, 2,133.45 and 382.32 is: 573.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,422.36 : 2,133.45 = 382.32 : x
  2. Step 2: Convert to fraction form
    1,422.36/2,133.45 = 382.32/x
  3. Step 3: Cross multiply
    1,422.36x = 2,133.45 × 382.32
  4. Step 4: Simplify right side
    1,422.36x = 815,660.60
  5. Step 5: Solve for x
    x = 815,660.60/1,422.36
  6. Step 6: Final answer
    x = 573.46

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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.