Home / 3,915.19-5,401.78-2,322.09

Finding the Fourth Proportional to 3,915.19, 5,401.78 and 2,322.09

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Solution

The fourth proportional to 3,915.19, 5,401.78 and 2,322.09 is: 3,203.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,915.19 : 5,401.78 = 2,322.09 : x
  2. Step 2: Convert to fraction form
    3,915.19/5,401.78 = 2,322.09/x
  3. Step 3: Cross multiply
    3,915.19x = 5,401.78 × 2,322.09
  4. Step 4: Simplify right side
    3,915.19x = 12,543,425.44
  5. Step 5: Solve for x
    x = 12,543,425.44/3,915.19
  6. Step 6: Final answer
    x = 3,203.79

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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.