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Finding the Fourth Proportional to 3,328.84, 4,993.17 and 863.65

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Solution

The fourth proportional to 3,328.84, 4,993.17 and 863.65 is: 1,295.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,328.84 : 4,993.17 = 863.65 : x
  2. Step 2: Convert to fraction form
    3,328.84/4,993.17 = 863.65/x
  3. Step 3: Cross multiply
    3,328.84x = 4,993.17 × 863.65
  4. Step 4: Simplify right side
    3,328.84x = 4,312,351.27
  5. Step 5: Solve for x
    x = 4,312,351.27/3,328.84
  6. Step 6: Final answer
    x = 1,295.45

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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.