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Finding the Fourth Proportional to 1,842.11, 2,763.16 and 609.18

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Solution

The fourth proportional to 1,842.11, 2,763.16 and 609.18 is: 913.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,842.11 : 2,763.16 = 609.18 : x
  2. Step 2: Convert to fraction form
    1,842.11/2,763.16 = 609.18/x
  3. Step 3: Cross multiply
    1,842.11x = 2,763.16 × 609.18
  4. Step 4: Simplify right side
    1,842.11x = 1,683,270.65
  5. Step 5: Solve for x
    x = 1,683,270.65/1,842.11
  6. Step 6: Final answer
    x = 913.78

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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.