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Finding the Fourth Proportional to 3,449.40, 5,174.16 and 984.29

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Solution

The fourth proportional to 3,449.40, 5,174.16 and 984.29 is: 1,476.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,449.40 : 5,174.16 = 984.29 : x
  2. Step 2: Convert to fraction form
    3,449.40/5,174.16 = 984.29/x
  3. Step 3: Cross multiply
    3,449.40x = 5,174.16 × 984.29
  4. Step 4: Simplify right side
    3,449.40x = 5,092,848.08
  5. Step 5: Solve for x
    x = 5,092,848.08/3,449.40
  6. Step 6: Final answer
    x = 1,476.44

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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.