Home / 2,356.38-3,251.87-1,308.51

Finding the Fourth Proportional to 2,356.38, 3,251.87 and 1,308.51

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Solution

The fourth proportional to 2,356.38, 3,251.87 and 1,308.51 is: 1,805.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,356.38 : 3,251.87 = 1,308.51 : x
  2. Step 2: Convert to fraction form
    2,356.38/3,251.87 = 1,308.51/x
  3. Step 3: Cross multiply
    2,356.38x = 3,251.87 × 1,308.51
  4. Step 4: Simplify right side
    2,356.38x = 4,255,104.41
  5. Step 5: Solve for x
    x = 4,255,104.41/2,356.38
  6. Step 6: Final answer
    x = 1,805.78

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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.