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Finding the Fourth Proportional to 2,008.45, 3,012.13 and 709.75

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Solution

The fourth proportional to 2,008.45, 3,012.13 and 709.75 is: 1,064.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,008.45 : 3,012.13 = 709.75 : x
  2. Step 2: Convert to fraction form
    2,008.45/3,012.13 = 709.75/x
  3. Step 3: Cross multiply
    2,008.45x = 3,012.13 × 709.75
  4. Step 4: Simplify right side
    2,008.45x = 2,137,859.27
  5. Step 5: Solve for x
    x = 2,137,859.27/2,008.45
  6. Step 6: Final answer
    x = 1,064.43

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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.