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Finding the Fourth Proportional to 3,608.95, 4,978.97 and 2,192.13

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Solution

The fourth proportional to 3,608.95, 4,978.97 and 2,192.13 is: 3,024.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,608.95 : 4,978.97 = 2,192.13 : x
  2. Step 2: Convert to fraction form
    3,608.95/4,978.97 = 2,192.13/x
  3. Step 3: Cross multiply
    3,608.95x = 4,978.97 × 2,192.13
  4. Step 4: Simplify right side
    3,608.95x = 10,914,538.55
  5. Step 5: Solve for x
    x = 10,914,538.55/3,608.95
  6. Step 6: Final answer
    x = 3,024.30

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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.