Home / 3,727.74-5,145.31-2,135.28

Finding the Fourth Proportional to 3,727.74, 5,145.31 and 2,135.28

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Solution

The fourth proportional to 3,727.74, 5,145.31 and 2,135.28 is: 2,947.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,727.74 : 5,145.31 = 2,135.28 : x
  2. Step 2: Convert to fraction form
    3,727.74/5,145.31 = 2,135.28/x
  3. Step 3: Cross multiply
    3,727.74x = 5,145.31 × 2,135.28
  4. Step 4: Simplify right side
    3,727.74x = 10,986,677.54
  5. Step 5: Solve for x
    x = 10,986,677.54/3,727.74
  6. Step 6: Final answer
    x = 2,947.28

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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.