Home / 2,286.84-3,155.90-1,390.27

Finding the Fourth Proportional to 2,286.84, 3,155.90 and 1,390.27

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Solution

The fourth proportional to 2,286.84, 3,155.90 and 1,390.27 is: 1,918.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,286.84 : 3,155.90 = 1,390.27 : x
  2. Step 2: Convert to fraction form
    2,286.84/3,155.90 = 1,390.27/x
  3. Step 3: Cross multiply
    2,286.84x = 3,155.90 × 1,390.27
  4. Step 4: Simplify right side
    2,286.84x = 4,387,548.08
  5. Step 5: Solve for x
    x = 4,387,548.08/2,286.84
  6. Step 6: Final answer
    x = 1,918.61

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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.