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Finding the Fourth Proportional to 2,579.91, 3,867.51 and 936.09

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Solution

The fourth proportional to 2,579.91, 3,867.51 and 936.09 is: 1,403.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,579.91 : 3,867.51 = 936.09 : x
  2. Step 2: Convert to fraction form
    2,579.91/3,867.51 = 936.09/x
  3. Step 3: Cross multiply
    2,579.91x = 3,867.51 × 936.09
  4. Step 4: Simplify right side
    2,579.91x = 3,620,332.76
  5. Step 5: Solve for x
    x = 3,620,332.76/2,579.91
  6. Step 6: Final answer
    x = 1,403.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.