Home / 5,215.59-7,198.74-3,228.12

Finding the Fourth Proportional to 5,215.59, 7,198.74 and 3,228.12

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Solution

The fourth proportional to 5,215.59, 7,198.74 and 3,228.12 is: 4,455.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,215.59 : 7,198.74 = 3,228.12 : x
  2. Step 2: Convert to fraction form
    5,215.59/7,198.74 = 3,228.12/x
  3. Step 3: Cross multiply
    5,215.59x = 7,198.74 × 3,228.12
  4. Step 4: Simplify right side
    5,215.59x = 23,238,396.57
  5. Step 5: Solve for x
    x = 23,238,396.57/5,215.59
  6. Step 6: Final answer
    x = 4,455.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.