Home / 1,982.61-2,735.89-1,098.36

Finding the Fourth Proportional to 1,982.61, 2,735.89 and 1,098.36

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Solution

The fourth proportional to 1,982.61, 2,735.89 and 1,098.36 is: 1,515.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,982.61 : 2,735.89 = 1,098.36 : x
  2. Step 2: Convert to fraction form
    1,982.61/2,735.89 = 1,098.36/x
  3. Step 3: Cross multiply
    1,982.61x = 2,735.89 × 1,098.36
  4. Step 4: Simplify right side
    1,982.61x = 3,004,989.39
  5. Step 5: Solve for x
    x = 3,004,989.39/1,982.61
  6. Step 6: Final answer
    x = 1,515.67

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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.