Home / 3,857.27-5,322.65-2,155.46

Finding the Fourth Proportional to 3,857.27, 5,322.65 and 2,155.46

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Solution

The fourth proportional to 3,857.27, 5,322.65 and 2,155.46 is: 2,974.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,857.27 : 5,322.65 = 2,155.46 : x
  2. Step 2: Convert to fraction form
    3,857.27/5,322.65 = 2,155.46/x
  3. Step 3: Cross multiply
    3,857.27x = 5,322.65 × 2,155.46
  4. Step 4: Simplify right side
    3,857.27x = 11,472,721.78
  5. Step 5: Solve for x
    x = 11,472,721.78/3,857.27
  6. Step 6: Final answer
    x = 2,974.32

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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.