Home / 8,198.51-11,318.60-5,412.11

Finding the Fourth Proportional to 8,198.51, 11,318.60 and 5,412.11

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Solution

The fourth proportional to 8,198.51, 11,318.60 and 5,412.11 is: 7,471.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,198.51 : 11,318.60 = 5,412.11 : x
  2. Step 2: Convert to fraction form
    8,198.51/11,318.60 = 5,412.11/x
  3. Step 3: Cross multiply
    8,198.51x = 11,318.60 × 5,412.11
  4. Step 4: Simplify right side
    8,198.51x = 61,257,465.18
  5. Step 5: Solve for x
    x = 61,257,465.18/8,198.51
  6. Step 6: Final answer
    x = 7,471.78

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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.