Home / 5,475-8,212.50-2,189.56

Finding the Fourth Proportional to 5,475, 8,212.50 and 2,189.56

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Solution

The fourth proportional to 5,475, 8,212.50 and 2,189.56 is: 3,284.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,475 : 8,212.50 = 2,189.56 : x
  2. Step 2: Convert to fraction form
    5,475/8,212.50 = 2,189.56/x
  3. Step 3: Cross multiply
    5,475x = 8,212.50 × 2,189.56
  4. Step 4: Simplify right side
    5,475x = 17,981,761.50
  5. Step 5: Solve for x
    x = 17,981,761.50/5,475
  6. Step 6: Final answer
    x = 3,284.34

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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.