Home / 1,422.32-1,962.35-1,122.62

Finding the Fourth Proportional to 1,422.32, 1,962.35 and 1,122.62

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Solution

The fourth proportional to 1,422.32, 1,962.35 and 1,122.62 is: 1,548.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,422.32 : 1,962.35 = 1,122.62 : x
  2. Step 2: Convert to fraction form
    1,422.32/1,962.35 = 1,122.62/x
  3. Step 3: Cross multiply
    1,422.32x = 1,962.35 × 1,122.62
  4. Step 4: Simplify right side
    1,422.32x = 2,202,957.93
  5. Step 5: Solve for x
    x = 2,202,957.93/1,422.32
  6. Step 6: Final answer
    x = 1,548.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.