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Finding the Fourth Proportional to 3,174.28, 4,760.64 and 983.08

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Solution

The fourth proportional to 3,174.28, 4,760.64 and 983.08 is: 1,474.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,174.28 : 4,760.64 = 983.08 : x
  2. Step 2: Convert to fraction form
    3,174.28/4,760.64 = 983.08/x
  3. Step 3: Cross multiply
    3,174.28x = 4,760.64 × 983.08
  4. Step 4: Simplify right side
    3,174.28x = 4,680,089.97
  5. Step 5: Solve for x
    x = 4,680,089.97/3,174.28
  6. Step 6: Final answer
    x = 1,474.38

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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.