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Finding the Fourth Proportional to 7,879.58, 11,815.72 and 4,593.61

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Solution

The fourth proportional to 7,879.58, 11,815.72 and 4,593.61 is: 6,888.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,879.58 : 11,815.72 = 4,593.61 : x
  2. Step 2: Convert to fraction form
    7,879.58/11,815.72 = 4,593.61/x
  3. Step 3: Cross multiply
    7,879.58x = 11,815.72 × 4,593.61
  4. Step 4: Simplify right side
    7,879.58x = 54,276,838.67
  5. Step 5: Solve for x
    x = 54,276,838.67/7,879.58
  6. Step 6: Final answer
    x = 6,888.29

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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.