Home / 5,115.82-7,063.80-3,994.81

Finding the Fourth Proportional to 5,115.82, 7,063.80 and 3,994.81

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Solution

The fourth proportional to 5,115.82, 7,063.80 and 3,994.81 is: 5,515.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,115.82 : 7,063.80 = 3,994.81 : x
  2. Step 2: Convert to fraction form
    5,115.82/7,063.80 = 3,994.81/x
  3. Step 3: Cross multiply
    5,115.82x = 7,063.80 × 3,994.81
  4. Step 4: Simplify right side
    5,115.82x = 28,218,538.88
  5. Step 5: Solve for x
    x = 28,218,538.88/5,115.82
  6. Step 6: Final answer
    x = 5,515.94

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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.