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Finding the Fourth Proportional to 2,626.03, 3,938.91 and 982.45

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Solution

The fourth proportional to 2,626.03, 3,938.91 and 982.45 is: 1,473.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,626.03 : 3,938.91 = 982.45 : x
  2. Step 2: Convert to fraction form
    2,626.03/3,938.91 = 982.45/x
  3. Step 3: Cross multiply
    2,626.03x = 3,938.91 × 982.45
  4. Step 4: Simplify right side
    2,626.03x = 3,869,782.13
  5. Step 5: Solve for x
    x = 3,869,782.13/2,626.03
  6. Step 6: Final answer
    x = 1,473.62

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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.