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Finding the Fourth Proportional to 3,322.76, 4,982.96 and 982.14

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Solution

The fourth proportional to 3,322.76, 4,982.96 and 982.14 is: 1,472.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,322.76 : 4,982.96 = 982.14 : x
  2. Step 2: Convert to fraction form
    3,322.76/4,982.96 = 982.14/x
  3. Step 3: Cross multiply
    3,322.76x = 4,982.96 × 982.14
  4. Step 4: Simplify right side
    3,322.76x = 4,893,948.10
  5. Step 5: Solve for x
    x = 4,893,948.10/3,322.76
  6. Step 6: Final answer
    x = 1,472.86

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1.5x scale

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.