Home / 2,190.48-3,286.80-1,545.36

Finding the Fourth Proportional to 2,190.48, 3,286.80 and 1,545.36

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Solution

The fourth proportional to 2,190.48, 3,286.80 and 1,545.36 is: 2,318.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,190.48 : 3,286.80 = 1,545.36 : x
  2. Step 2: Convert to fraction form
    2,190.48/3,286.80 = 1,545.36/x
  3. Step 3: Cross multiply
    2,190.48x = 3,286.80 × 1,545.36
  4. Step 4: Simplify right side
    2,190.48x = 5,079,289.25
  5. Step 5: Solve for x
    x = 5,079,289.25/2,190.48
  6. Step 6: Final answer
    x = 2,318.80

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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.