Home / 2,299.38-3,175-1,415.68

Finding the Fourth Proportional to 2,299.38, 3,175 and 1,415.68

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Solution

The fourth proportional to 2,299.38, 3,175 and 1,415.68 is: 1,954.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,299.38 : 3,175 = 1,415.68 : x
  2. Step 2: Convert to fraction form
    2,299.38/3,175 = 1,415.68/x
  3. Step 3: Cross multiply
    2,299.38x = 3,175 × 1,415.68
  4. Step 4: Simplify right side
    2,299.38x = 4,494,784
  5. Step 5: Solve for x
    x = 4,494,784/2,299.38
  6. Step 6: Final answer
    x = 1,954.78

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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.