Home / 2,405.22-3,318.82-1,357.08

Finding the Fourth Proportional to 2,405.22, 3,318.82 and 1,357.08

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Solution

The fourth proportional to 2,405.22, 3,318.82 and 1,357.08 is: 1,872.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,405.22 : 3,318.82 = 1,357.08 : x
  2. Step 2: Convert to fraction form
    2,405.22/3,318.82 = 1,357.08/x
  3. Step 3: Cross multiply
    2,405.22x = 3,318.82 × 1,357.08
  4. Step 4: Simplify right side
    2,405.22x = 4,503,904.25
  5. Step 5: Solve for x
    x = 4,503,904.25/2,405.22
  6. Step 6: Final answer
    x = 1,872.55

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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.