Home / 4,915.72-6,783.63-2,791.23

Finding the Fourth Proportional to 4,915.72, 6,783.63 and 2,791.23

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Solution

The fourth proportional to 4,915.72, 6,783.63 and 2,791.23 is: 3,851.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,915.72 : 6,783.63 = 2,791.23 : x
  2. Step 2: Convert to fraction form
    4,915.72/6,783.63 = 2,791.23/x
  3. Step 3: Cross multiply
    4,915.72x = 6,783.63 × 2,791.23
  4. Step 4: Simplify right side
    4,915.72x = 18,934,689.52
  5. Step 5: Solve for x
    x = 18,934,689.52/4,915.72
  6. Step 6: Final answer
    x = 3,851.86

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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.