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Finding the Fourth Proportional to 2,012.66, 3,019.28 and 626.11

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Solution

The fourth proportional to 2,012.66, 3,019.28 and 626.11 is: 939.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,012.66 : 3,019.28 = 626.11 : x
  2. Step 2: Convert to fraction form
    2,012.66/3,019.28 = 626.11/x
  3. Step 3: Cross multiply
    2,012.66x = 3,019.28 × 626.11
  4. Step 4: Simplify right side
    2,012.66x = 1,890,401.40
  5. Step 5: Solve for x
    x = 1,890,401.40/2,012.66
  6. Step 6: Final answer
    x = 939.26

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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.