Home / 5,478.62-8,217.52-2,189.61

Finding the Fourth Proportional to 5,478.62, 8,217.52 and 2,189.61

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Solution

The fourth proportional to 5,478.62, 8,217.52 and 2,189.61 is: 3,284.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,478.62 : 8,217.52 = 2,189.61 : x
  2. Step 2: Convert to fraction form
    5,478.62/8,217.52 = 2,189.61/x
  3. Step 3: Cross multiply
    5,478.62x = 8,217.52 × 2,189.61
  4. Step 4: Simplify right side
    5,478.62x = 17,993,184.51
  5. Step 5: Solve for x
    x = 17,993,184.51/5,478.62
  6. Step 6: Final answer
    x = 3,284.26

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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.