Home / 2,188.40-3,287.46-1,896.80

Finding the Fourth Proportional to 2,188.40, 3,287.46 and 1,896.80

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Solution

The fourth proportional to 2,188.40, 3,287.46 and 1,896.80 is: 2,849.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,188.40 : 3,287.46 = 1,896.80 : x
  2. Step 2: Convert to fraction form
    2,188.40/3,287.46 = 1,896.80/x
  3. Step 3: Cross multiply
    2,188.40x = 3,287.46 × 1,896.80
  4. Step 4: Simplify right side
    2,188.40x = 6,235,654.13
  5. Step 5: Solve for x
    x = 6,235,654.13/2,188.40
  6. Step 6: Final answer
    x = 2,849.41

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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.