Home / 8,200.11-11,317.84-5,215.37

Finding the Fourth Proportional to 8,200.11, 11,317.84 and 5,215.37

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Solution

The fourth proportional to 8,200.11, 11,317.84 and 5,215.37 is: 7,198.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,200.11 : 11,317.84 = 5,215.37 : x
  2. Step 2: Convert to fraction form
    8,200.11/11,317.84 = 5,215.37/x
  3. Step 3: Cross multiply
    8,200.11x = 11,317.84 × 5,215.37
  4. Step 4: Simplify right side
    8,200.11x = 59,026,723.20
  5. Step 5: Solve for x
    x = 59,026,723.20/8,200.11
  6. Step 6: Final answer
    x = 7,198.28

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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.