Home / 1,639.28-2,459.61-982.43

Finding the Fourth Proportional to 1,639.28, 2,459.61 and 982.43

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Solution

The fourth proportional to 1,639.28, 2,459.61 and 982.43 is: 1,474.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,639.28 : 2,459.61 = 982.43 : x
  2. Step 2: Convert to fraction form
    1,639.28/2,459.61 = 982.43/x
  3. Step 3: Cross multiply
    1,639.28x = 2,459.61 × 982.43
  4. Step 4: Simplify right side
    1,639.28x = 2,416,377.44
  5. Step 5: Solve for x
    x = 2,416,377.44/1,639.28
  6. Step 6: Final answer
    x = 1,474.05

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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.