Home / 6,405.73-9,611.31-3,118.84

Finding the Fourth Proportional to 6,405.73, 9,611.31 and 3,118.84

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Solution

The fourth proportional to 6,405.73, 9,611.31 and 3,118.84 is: 4,679.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,405.73 : 9,611.31 = 3,118.84 : x
  2. Step 2: Convert to fraction form
    6,405.73/9,611.31 = 3,118.84/x
  3. Step 3: Cross multiply
    6,405.73x = 9,611.31 × 3,118.84
  4. Step 4: Simplify right side
    6,405.73x = 29,976,138.08
  5. Step 5: Solve for x
    x = 29,976,138.08/6,405.73
  6. Step 6: Final answer
    x = 4,679.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.