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Finding the Fourth Proportional to 8,825.98, 13,238.96 and 6,879.64

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Solution

The fourth proportional to 8,825.98, 13,238.96 and 6,879.64 is: 10,319.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,825.98 : 13,238.96 = 6,879.64 : x
  2. Step 2: Convert to fraction form
    8,825.98/13,238.96 = 6,879.64/x
  3. Step 3: Cross multiply
    8,825.98x = 13,238.96 × 6,879.64
  4. Step 4: Simplify right side
    8,825.98x = 91,079,278.77
  5. Step 5: Solve for x
    x = 91,079,278.77/8,825.98
  6. Step 6: Final answer
    x = 10,319.45

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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.