Home / 2,828.10-4,233.78-2,100.90

Finding the Fourth Proportional to 2,828.10, 4,233.78 and 2,100.90

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Solution

The fourth proportional to 2,828.10, 4,233.78 and 2,100.90 is: 3,145.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,828.10 : 4,233.78 = 2,100.90 : x
  2. Step 2: Convert to fraction form
    2,828.10/4,233.78 = 2,100.90/x
  3. Step 3: Cross multiply
    2,828.10x = 4,233.78 × 2,100.90
  4. Step 4: Simplify right side
    2,828.10x = 8,894,748.40
  5. Step 5: Solve for x
    x = 8,894,748.40/2,828.10
  6. Step 6: Final answer
    x = 3,145.13

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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.