Home / 2,859.91-4,286.79-1,872.35

Finding the Fourth Proportional to 2,859.91, 4,286.79 and 1,872.35

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Solution

The fourth proportional to 2,859.91, 4,286.79 and 1,872.35 is: 2,806.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,859.91 : 4,286.79 = 1,872.35 : x
  2. Step 2: Convert to fraction form
    2,859.91/4,286.79 = 1,872.35/x
  3. Step 3: Cross multiply
    2,859.91x = 4,286.79 × 1,872.35
  4. Step 4: Simplify right side
    2,859.91x = 8,026,365.90
  5. Step 5: Solve for x
    x = 8,026,365.90/2,859.91
  6. Step 6: Final answer
    x = 2,806.51

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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.