Home / 2,828.52-3,905.30-2,164.22

Finding the Fourth Proportional to 2,828.52, 3,905.30 and 2,164.22

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Solution

The fourth proportional to 2,828.52, 3,905.30 and 2,164.22 is: 2,988.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,828.52 : 3,905.30 = 2,164.22 : x
  2. Step 2: Convert to fraction form
    2,828.52/3,905.30 = 2,164.22/x
  3. Step 3: Cross multiply
    2,828.52x = 3,905.30 × 2,164.22
  4. Step 4: Simplify right side
    2,828.52x = 8,451,928.37
  5. Step 5: Solve for x
    x = 8,451,928.37/2,828.52
  6. Step 6: Final answer
    x = 2,988.11

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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.