Home / 4,142.75-5,718.20-3,309.26

Finding the Fourth Proportional to 4,142.75, 5,718.20 and 3,309.26

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Solution

The fourth proportional to 4,142.75, 5,718.20 and 3,309.26 is: 4,567.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,142.75 : 5,718.20 = 3,309.26 : x
  2. Step 2: Convert to fraction form
    4,142.75/5,718.20 = 3,309.26/x
  3. Step 3: Cross multiply
    4,142.75x = 5,718.20 × 3,309.26
  4. Step 4: Simplify right side
    4,142.75x = 18,922,965.39
  5. Step 5: Solve for x
    x = 18,922,965.39/4,142.75
  6. Step 6: Final answer
    x = 4,567.74

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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.