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Finding the Fourth Proportional to 7,879.97, 10,873.50 and 4,342.50

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Solution

The fourth proportional to 7,879.97, 10,873.50 and 4,342.50 is: 5,992.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,879.97 : 10,873.50 = 4,342.50 : x
  2. Step 2: Convert to fraction form
    7,879.97/10,873.50 = 4,342.50/x
  3. Step 3: Cross multiply
    7,879.97x = 10,873.50 × 4,342.50
  4. Step 4: Simplify right side
    7,879.97x = 47,218,173.75
  5. Step 5: Solve for x
    x = 47,218,173.75/7,879.97
  6. Step 6: Final answer
    x = 5,992.18

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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.