Home / 2,828.20-4,242.30-2,714.80

Finding the Fourth Proportional to 2,828.20, 4,242.30 and 2,714.80

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Solution

The fourth proportional to 2,828.20, 4,242.30 and 2,714.80 is: 4,072.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,828.20 : 4,242.30 = 2,714.80 : x
  2. Step 2: Convert to fraction form
    2,828.20/4,242.30 = 2,714.80/x
  3. Step 3: Cross multiply
    2,828.20x = 4,242.30 × 2,714.80
  4. Step 4: Simplify right side
    2,828.20x = 11,516,996.04
  5. Step 5: Solve for x
    x = 11,516,996.04/2,828.20
  6. Step 6: Final answer
    x = 4,072.20

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1.5x scale

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.