Home / 3,276.94-4,915.28-811.70

Finding the Fourth Proportional to 3,276.94, 4,915.28 and 811.70

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Solution

The fourth proportional to 3,276.94, 4,915.28 and 811.70 is: 1,217.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,276.94 : 4,915.28 = 811.70 : x
  2. Step 2: Convert to fraction form
    3,276.94/4,915.28 = 811.70/x
  3. Step 3: Cross multiply
    3,276.94x = 4,915.28 × 811.70
  4. Step 4: Simplify right side
    3,276.94x = 3,989,747.09
  5. Step 5: Solve for x
    x = 3,989,747.09/3,276.94
  6. Step 6: Final answer
    x = 1,217.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.