Home / 3,915.17-5,402.79-2,321.09

Finding the Fourth Proportional to 3,915.17, 5,402.79 and 2,321.09

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Solution

The fourth proportional to 3,915.17, 5,402.79 and 2,321.09 is: 3,203.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,915.17 : 5,402.79 = 2,321.09 : x
  2. Step 2: Convert to fraction form
    3,915.17/5,402.79 = 2,321.09/x
  3. Step 3: Cross multiply
    3,915.17x = 5,402.79 × 2,321.09
  4. Step 4: Simplify right side
    3,915.17x = 12,540,361.84
  5. Step 5: Solve for x
    x = 12,540,361.84/3,915.17
  6. Step 6: Final answer
    x = 3,203.02

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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.