Home / 2,828.20-3,905.38-2,355.88

Finding the Fourth Proportional to 2,828.20, 3,905.38 and 2,355.88

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Solution

The fourth proportional to 2,828.20, 3,905.38 and 2,355.88 is: 3,253.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,828.20 : 3,905.38 = 2,355.88 : x
  2. Step 2: Convert to fraction form
    2,828.20/3,905.38 = 2,355.88/x
  3. Step 3: Cross multiply
    2,828.20x = 3,905.38 × 2,355.88
  4. Step 4: Simplify right side
    2,828.20x = 9,200,606.63
  5. Step 5: Solve for x
    x = 9,200,606.63/2,828.20
  6. Step 6: Final answer
    x = 3,253.17

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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.