Home / 1,092.20-1,638.30-1,045.73

Finding the Fourth Proportional to 1,092.20, 1,638.30 and 1,045.73

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Solution

The fourth proportional to 1,092.20, 1,638.30 and 1,045.73 is: 1,568.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,092.20 : 1,638.30 = 1,045.73 : x
  2. Step 2: Convert to fraction form
    1,092.20/1,638.30 = 1,045.73/x
  3. Step 3: Cross multiply
    1,092.20x = 1,638.30 × 1,045.73
  4. Step 4: Simplify right side
    1,092.20x = 1,713,219.46
  5. Step 5: Solve for x
    x = 1,713,219.46/1,092.20
  6. Step 6: Final answer
    x = 1,568.60

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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.