Home / 2,012.28-3,018.48-551.40

Finding the Fourth Proportional to 2,012.28, 3,018.48 and 551.40

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Solution

The fourth proportional to 2,012.28, 3,018.48 and 551.40 is: 827.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,012.28 : 3,018.48 = 551.40 : x
  2. Step 2: Convert to fraction form
    2,012.28/3,018.48 = 551.40/x
  3. Step 3: Cross multiply
    2,012.28x = 3,018.48 × 551.40
  4. Step 4: Simplify right side
    2,012.28x = 1,664,389.87
  5. Step 5: Solve for x
    x = 1,664,389.87/2,012.28
  6. Step 6: Final answer
    x = 827.12

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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.