Home / 2,286.64-3,155.58-1,238.71

Finding the Fourth Proportional to 2,286.64, 3,155.58 and 1,238.71

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Solution

The fourth proportional to 2,286.64, 3,155.58 and 1,238.71 is: 1,709.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,286.64 : 3,155.58 = 1,238.71 : x
  2. Step 2: Convert to fraction form
    2,286.64/3,155.58 = 1,238.71/x
  3. Step 3: Cross multiply
    2,286.64x = 3,155.58 × 1,238.71
  4. Step 4: Simplify right side
    2,286.64x = 3,908,848.50
  5. Step 5: Solve for x
    x = 3,908,848.50/2,286.64
  6. Step 6: Final answer
    x = 1,709.43

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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.