Home / 1,982.55-2,735.91-1,098.30

Finding the Fourth Proportional to 1,982.55, 2,735.91 and 1,098.30

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Solution

The fourth proportional to 1,982.55, 2,735.91 and 1,098.30 is: 1,515.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,982.55 : 2,735.91 = 1,098.30 : x
  2. Step 2: Convert to fraction form
    1,982.55/2,735.91 = 1,098.30/x
  3. Step 3: Cross multiply
    1,982.55x = 2,735.91 × 1,098.30
  4. Step 4: Simplify right side
    1,982.55x = 3,004,849.95
  5. Step 5: Solve for x
    x = 3,004,849.95/1,982.55
  6. Step 6: Final answer
    x = 1,515.65

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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.