Home / 8,320.32-11,479.82-4,961.61

Finding the Fourth Proportional to 8,320.32, 11,479.82 and 4,961.61

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Solution

The fourth proportional to 8,320.32, 11,479.82 and 4,961.61 is: 6,845.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,320.32 : 11,479.82 = 4,961.61 : x
  2. Step 2: Convert to fraction form
    8,320.32/11,479.82 = 4,961.61/x
  3. Step 3: Cross multiply
    8,320.32x = 11,479.82 × 4,961.61
  4. Step 4: Simplify right side
    8,320.32x = 56,958,364.90
  5. Step 5: Solve for x
    x = 56,958,364.90/8,320.32
  6. Step 6: Final answer
    x = 6,845.69

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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.