Home / 1,935.91-2,671.82-1,228.11

Finding the Fourth Proportional to 1,935.91, 2,671.82 and 1,228.11

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Solution

The fourth proportional to 1,935.91, 2,671.82 and 1,228.11 is: 1,694.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,935.91 : 2,671.82 = 1,228.11 : x
  2. Step 2: Convert to fraction form
    1,935.91/2,671.82 = 1,228.11/x
  3. Step 3: Cross multiply
    1,935.91x = 2,671.82 × 1,228.11
  4. Step 4: Simplify right side
    1,935.91x = 3,281,288.86
  5. Step 5: Solve for x
    x = 3,281,288.86/1,935.91
  6. Step 6: Final answer
    x = 1,694.96

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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.