Home / 5,578.12-8,362.20-2,117.80

Finding the Fourth Proportional to 5,578.12, 8,362.20 and 2,117.80

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Solution

The fourth proportional to 5,578.12, 8,362.20 and 2,117.80 is: 3,174.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,578.12 : 8,362.20 = 2,117.80 : x
  2. Step 2: Convert to fraction form
    5,578.12/8,362.20 = 2,117.80/x
  3. Step 3: Cross multiply
    5,578.12x = 8,362.20 × 2,117.80
  4. Step 4: Simplify right side
    5,578.12x = 17,709,467.16
  5. Step 5: Solve for x
    x = 17,709,467.16/5,578.12
  6. Step 6: Final answer
    x = 3,174.81

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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.