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Finding the Fourth Proportional to 7,879.41, 10,873.62 and 4,342.55

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Solution

The fourth proportional to 7,879.41, 10,873.62 and 4,342.55 is: 5,992.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,879.41 : 10,873.62 = 4,342.55 : x
  2. Step 2: Convert to fraction form
    7,879.41/10,873.62 = 4,342.55/x
  3. Step 3: Cross multiply
    7,879.41x = 10,873.62 × 4,342.55
  4. Step 4: Simplify right side
    7,879.41x = 47,219,184.16
  5. Step 5: Solve for x
    x = 47,219,184.16/7,879.41
  6. Step 6: Final answer
    x = 5,992.73

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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.