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Finding the Fourth Proportional to 3,449.15, 5,174.54 and 984.01

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Solution

The fourth proportional to 3,449.15, 5,174.54 and 984.01 is: 1,476.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,449.15 : 5,174.54 = 984.01 : x
  2. Step 2: Convert to fraction form
    3,449.15/5,174.54 = 984.01/x
  3. Step 3: Cross multiply
    3,449.15x = 5,174.54 × 984.01
  4. Step 4: Simplify right side
    3,449.15x = 5,091,799.11
  5. Step 5: Solve for x
    x = 5,091,799.11/3,449.15
  6. Step 6: Final answer
    x = 1,476.25

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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.