Home / 3,915.35-5,403.20-2,146.92

Finding the Fourth Proportional to 3,915.35, 5,403.20 and 2,146.92

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Solution

The fourth proportional to 3,915.35, 5,403.20 and 2,146.92 is: 2,962.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,915.35 : 5,403.20 = 2,146.92 : x
  2. Step 2: Convert to fraction form
    3,915.35/5,403.20 = 2,146.92/x
  3. Step 3: Cross multiply
    3,915.35x = 5,403.20 × 2,146.92
  4. Step 4: Simplify right side
    3,915.35x = 11,600,227.41
  5. Step 5: Solve for x
    x = 11,600,227.41/3,915.35
  6. Step 6: Final answer
    x = 2,962.76

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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.