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Finding the Fourth Proportional to 1,806.24, 2,709.15 and 636.19

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Solution

The fourth proportional to 1,806.24, 2,709.15 and 636.19 is: 954.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,806.24 : 2,709.15 = 636.19 : x
  2. Step 2: Convert to fraction form
    1,806.24/2,709.15 = 636.19/x
  3. Step 3: Cross multiply
    1,806.24x = 2,709.15 × 636.19
  4. Step 4: Simplify right side
    1,806.24x = 1,723,534.14
  5. Step 5: Solve for x
    x = 1,723,534.14/1,806.24
  6. Step 6: Final answer
    x = 954.21

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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.