Home / 2,946.72-4,042.22-2,787.80

Finding the Fourth Proportional to 2,946.72, 4,042.22 and 2,787.80

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Solution

The fourth proportional to 2,946.72, 4,042.22 and 2,787.80 is: 3,824.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,946.72 : 4,042.22 = 2,787.80 : x
  2. Step 2: Convert to fraction form
    2,946.72/4,042.22 = 2,787.80/x
  3. Step 3: Cross multiply
    2,946.72x = 4,042.22 × 2,787.80
  4. Step 4: Simplify right side
    2,946.72x = 11,268,900.92
  5. Step 5: Solve for x
    x = 11,268,900.92/2,946.72
  6. Step 6: Final answer
    x = 3,824.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.