Home / 3,915.26-5,403-2,146.88

Finding the Fourth Proportional to 3,915.26, 5,403 and 2,146.88

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Solution

The fourth proportional to 3,915.26, 5,403 and 2,146.88 is: 2,962.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,915.26 : 5,403 = 2,146.88 : x
  2. Step 2: Convert to fraction form
    3,915.26/5,403 = 2,146.88/x
  3. Step 3: Cross multiply
    3,915.26x = 5,403 × 2,146.88
  4. Step 4: Simplify right side
    3,915.26x = 11,599,592.64
  5. Step 5: Solve for x
    x = 11,599,592.64/3,915.26
  6. Step 6: Final answer
    x = 2,962.66

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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.