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Finding the Fourth Proportional to 7,879.46, 10,873.88 and 4,342.90

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Solution

The fourth proportional to 7,879.46, 10,873.88 and 4,342.90 is: 5,993.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,879.46 : 10,873.88 = 4,342.90 : x
  2. Step 2: Convert to fraction form
    7,879.46/10,873.88 = 4,342.90/x
  3. Step 3: Cross multiply
    7,879.46x = 10,873.88 × 4,342.90
  4. Step 4: Simplify right side
    7,879.46x = 47,224,173.45
  5. Step 5: Solve for x
    x = 47,224,173.45/7,879.46
  6. Step 6: Final answer
    x = 5,993.33

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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.