Home / 2,828.20-3,902.89-1,586.20

Finding the Fourth Proportional to 2,828.20, 3,902.89 and 1,586.20

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Solution

The fourth proportional to 2,828.20, 3,902.89 and 1,586.20 is: 2,188.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,828.20 : 3,902.89 = 1,586.20 : x
  2. Step 2: Convert to fraction form
    2,828.20/3,902.89 = 1,586.20/x
  3. Step 3: Cross multiply
    2,828.20x = 3,902.89 × 1,586.20
  4. Step 4: Simplify right side
    2,828.20x = 6,190,764.12
  5. Step 5: Solve for x
    x = 6,190,764.12/2,828.20
  6. Step 6: Final answer
    x = 2,188.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.