Home / 5,320.45-7,980.22-2,198.51

Finding the Fourth Proportional to 5,320.45, 7,980.22 and 2,198.51

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Solution

The fourth proportional to 5,320.45, 7,980.22 and 2,198.51 is: 3,297.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,320.45 : 7,980.22 = 2,198.51 : x
  2. Step 2: Convert to fraction form
    5,320.45/7,980.22 = 2,198.51/x
  3. Step 3: Cross multiply
    5,320.45x = 7,980.22 × 2,198.51
  4. Step 4: Simplify right side
    5,320.45x = 17,544,586.25
  5. Step 5: Solve for x
    x = 17,544,586.25/5,320.45
  6. Step 6: Final answer
    x = 3,297.57

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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.