Home / 8,415.32-12,629.64-4,716.86

Finding the Fourth Proportional to 8,415.32, 12,629.64 and 4,716.86

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Solution

The fourth proportional to 8,415.32, 12,629.64 and 4,716.86 is: 7,079.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,415.32 : 12,629.64 = 4,716.86 : x
  2. Step 2: Convert to fraction form
    8,415.32/12,629.64 = 4,716.86/x
  3. Step 3: Cross multiply
    8,415.32x = 12,629.64 × 4,716.86
  4. Step 4: Simplify right side
    8,415.32x = 59,572,243.73
  5. Step 5: Solve for x
    x = 59,572,243.73/8,415.32
  6. Step 6: Final answer
    x = 7,079.02

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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.