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Finding the Fourth Proportional to 2,066.95, 3,099.26 and 679.91

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Solution

The fourth proportional to 2,066.95, 3,099.26 and 679.91 is: 1,019.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,066.95 : 3,099.26 = 679.91 : x
  2. Step 2: Convert to fraction form
    2,066.95/3,099.26 = 679.91/x
  3. Step 3: Cross multiply
    2,066.95x = 3,099.26 × 679.91
  4. Step 4: Simplify right side
    2,066.95x = 2,107,231.71
  5. Step 5: Solve for x
    x = 2,107,231.71/2,066.95
  6. Step 6: Final answer
    x = 1,019.49

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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.