Home / 3,847.68-5,309.28-2,168.64

Finding the Fourth Proportional to 3,847.68, 5,309.28 and 2,168.64

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Solution

The fourth proportional to 3,847.68, 5,309.28 and 2,168.64 is: 2,992.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,847.68 : 5,309.28 = 2,168.64 : x
  2. Step 2: Convert to fraction form
    3,847.68/5,309.28 = 2,168.64/x
  3. Step 3: Cross multiply
    3,847.68x = 5,309.28 × 2,168.64
  4. Step 4: Simplify right side
    3,847.68x = 11,513,916.98
  5. Step 5: Solve for x
    x = 11,513,916.98/3,847.68
  6. Step 6: Final answer
    x = 2,992.43

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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.