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Finding the Fourth Proportional to 2,614.01, 3,920.96 and 666.18

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Solution

The fourth proportional to 2,614.01, 3,920.96 and 666.18 is: 999.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,614.01 : 3,920.96 = 666.18 : x
  2. Step 2: Convert to fraction form
    2,614.01/3,920.96 = 666.18/x
  3. Step 3: Cross multiply
    2,614.01x = 3,920.96 × 666.18
  4. Step 4: Simplify right side
    2,614.01x = 2,612,066.80
  5. Step 5: Solve for x
    x = 2,612,066.80/2,614.01
  6. Step 6: Final answer
    x = 999.26

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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.