Home / 7,716.20-10,647.60-4,571.78

Finding the Fourth Proportional to 7,716.20, 10,647.60 and 4,571.78

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Solution

The fourth proportional to 7,716.20, 10,647.60 and 4,571.78 is: 6,308.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,716.20 : 10,647.60 = 4,571.78 : x
  2. Step 2: Convert to fraction form
    7,716.20/10,647.60 = 4,571.78/x
  3. Step 3: Cross multiply
    7,716.20x = 10,647.60 × 4,571.78
  4. Step 4: Simplify right side
    7,716.20x = 48,678,484.73
  5. Step 5: Solve for x
    x = 48,678,484.73/7,716.20
  6. Step 6: Final answer
    x = 6,308.61

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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.