Home / 3,946.15-5,428.92-3,836.80

Finding the Fourth Proportional to 3,946.15, 5,428.92 and 3,836.80

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Solution

The fourth proportional to 3,946.15, 5,428.92 and 3,836.80 is: 5,278.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,946.15 : 5,428.92 = 3,836.80 : x
  2. Step 2: Convert to fraction form
    3,946.15/5,428.92 = 3,836.80/x
  3. Step 3: Cross multiply
    3,946.15x = 5,428.92 × 3,836.80
  4. Step 4: Simplify right side
    3,946.15x = 20,829,680.26
  5. Step 5: Solve for x
    x = 20,829,680.26/3,946.15
  6. Step 6: Final answer
    x = 5,278.48

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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.