Home / 2,286.57-3,155.42-1,238.63

Finding the Fourth Proportional to 2,286.57, 3,155.42 and 1,238.63

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Solution

The fourth proportional to 2,286.57, 3,155.42 and 1,238.63 is: 1,709.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,286.57 : 3,155.42 = 1,238.63 : x
  2. Step 2: Convert to fraction form
    2,286.57/3,155.42 = 1,238.63/x
  3. Step 3: Cross multiply
    2,286.57x = 3,155.42 × 1,238.63
  4. Step 4: Simplify right side
    2,286.57x = 3,908,397.87
  5. Step 5: Solve for x
    x = 3,908,397.87/2,286.57
  6. Step 6: Final answer
    x = 1,709.28

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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.