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Finding the Fourth Proportional to 2,794.88, 4,192.96 and 847.12

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Solution

The fourth proportional to 2,794.88, 4,192.96 and 847.12 is: 1,270.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,794.88 : 4,192.96 = 847.12 : x
  2. Step 2: Convert to fraction form
    2,794.88/4,192.96 = 847.12/x
  3. Step 3: Cross multiply
    2,794.88x = 4,192.96 × 847.12
  4. Step 4: Simplify right side
    2,794.88x = 3,551,940.28
  5. Step 5: Solve for x
    x = 3,551,940.28/2,794.88
  6. Step 6: Final answer
    x = 1,270.87

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1.5x scale

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.