Home / 4,915.92-6,783.66-2,791.20

Finding the Fourth Proportional to 4,915.92, 6,783.66 and 2,791.20

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Solution

The fourth proportional to 4,915.92, 6,783.66 and 2,791.20 is: 3,851.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,915.92 : 6,783.66 = 2,791.20 : x
  2. Step 2: Convert to fraction form
    4,915.92/6,783.66 = 2,791.20/x
  3. Step 3: Cross multiply
    4,915.92x = 6,783.66 × 2,791.20
  4. Step 4: Simplify right side
    4,915.92x = 18,934,551.79
  5. Step 5: Solve for x
    x = 18,934,551.79/4,915.92
  6. Step 6: Final answer
    x = 3,851.68

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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.