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Finding the Fourth Proportional to 3,858.81, 5,788.17 and 2,214.18

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Solution

The fourth proportional to 3,858.81, 5,788.17 and 2,214.18 is: 3,321.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,858.81 : 5,788.17 = 2,214.18 : x
  2. Step 2: Convert to fraction form
    3,858.81/5,788.17 = 2,214.18/x
  3. Step 3: Cross multiply
    3,858.81x = 5,788.17 × 2,214.18
  4. Step 4: Simplify right side
    3,858.81x = 12,816,050.25
  5. Step 5: Solve for x
    x = 12,816,050.25/3,858.81
  6. Step 6: Final answer
    x = 3,321.24

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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.