Home / 2,012.20-3,018.56-551.40

Finding the Fourth Proportional to 2,012.20, 3,018.56 and 551.40

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Solution

The fourth proportional to 2,012.20, 3,018.56 and 551.40 is: 827.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,012.20 : 3,018.56 = 551.40 : x
  2. Step 2: Convert to fraction form
    2,012.20/3,018.56 = 551.40/x
  3. Step 3: Cross multiply
    2,012.20x = 3,018.56 × 551.40
  4. Step 4: Simplify right side
    2,012.20x = 1,664,433.98
  5. Step 5: Solve for x
    x = 1,664,433.98/2,012.20
  6. Step 6: Final answer
    x = 827.17

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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.