Home / 7,181.46-9,909.39-3,994.56

Finding the Fourth Proportional to 7,181.46, 9,909.39 and 3,994.56

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Solution

The fourth proportional to 7,181.46, 9,909.39 and 3,994.56 is: 5,511.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,181.46 : 9,909.39 = 3,994.56 : x
  2. Step 2: Convert to fraction form
    7,181.46/9,909.39 = 3,994.56/x
  3. Step 3: Cross multiply
    7,181.46x = 9,909.39 × 3,994.56
  4. Step 4: Simplify right side
    7,181.46x = 39,583,652.92
  5. Step 5: Solve for x
    x = 39,583,652.92/7,181.46
  6. Step 6: Final answer
    x = 5,511.92

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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.