Home / 1,422.19-1,962.83-1,359.92

Finding the Fourth Proportional to 1,422.19, 1,962.83 and 1,359.92

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Solution

The fourth proportional to 1,422.19, 1,962.83 and 1,359.92 is: 1,876.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,422.19 : 1,962.83 = 1,359.92 : x
  2. Step 2: Convert to fraction form
    1,422.19/1,962.83 = 1,359.92/x
  3. Step 3: Cross multiply
    1,422.19x = 1,962.83 × 1,359.92
  4. Step 4: Simplify right side
    1,422.19x = 2,669,289.88
  5. Step 5: Solve for x
    x = 2,669,289.88/1,422.19
  6. Step 6: Final answer
    x = 1,876.89

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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.