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Finding the Fourth Proportional to 3,183.28, 4,775.10 and 992.08

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Solution

The fourth proportional to 3,183.28, 4,775.10 and 992.08 is: 1,488.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,183.28 : 4,775.10 = 992.08 : x
  2. Step 2: Convert to fraction form
    3,183.28/4,775.10 = 992.08/x
  3. Step 3: Cross multiply
    3,183.28x = 4,775.10 × 992.08
  4. Step 4: Simplify right side
    3,183.28x = 4,737,281.21
  5. Step 5: Solve for x
    x = 4,737,281.21/3,183.28
  6. Step 6: Final answer
    x = 1,488.18

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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.