Home / 7,859.06-11,788.92-3,115.20

Finding the Fourth Proportional to 7,859.06, 11,788.92 and 3,115.20

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Solution

The fourth proportional to 7,859.06, 11,788.92 and 3,115.20 is: 4,672.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,859.06 : 11,788.92 = 3,115.20 : x
  2. Step 2: Convert to fraction form
    7,859.06/11,788.92 = 3,115.20/x
  3. Step 3: Cross multiply
    7,859.06x = 11,788.92 × 3,115.20
  4. Step 4: Simplify right side
    7,859.06x = 36,724,843.58
  5. Step 5: Solve for x
    x = 36,724,843.58/7,859.06
  6. Step 6: Final answer
    x = 4,672.93

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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.