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Finding the Fourth Proportional to 2,626.23, 3,938.90 and 982.34

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Solution

The fourth proportional to 2,626.23, 3,938.90 and 982.34 is: 1,473.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,626.23 : 3,938.90 = 982.34 : x
  2. Step 2: Convert to fraction form
    2,626.23/3,938.90 = 982.34/x
  3. Step 3: Cross multiply
    2,626.23x = 3,938.90 × 982.34
  4. Step 4: Simplify right side
    2,626.23x = 3,869,314.42
  5. Step 5: Solve for x
    x = 3,869,314.42/2,626.23
  6. Step 6: Final answer
    x = 1,473.33

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Similar ratio
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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.