Home / 8,261.44-12,380.52-6,403.86

Finding the Fourth Proportional to 8,261.44, 12,380.52 and 6,403.86

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Solution

The fourth proportional to 8,261.44, 12,380.52 and 6,403.86 is: 9,596.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,261.44 : 12,380.52 = 6,403.86 : x
  2. Step 2: Convert to fraction form
    8,261.44/12,380.52 = 6,403.86/x
  3. Step 3: Cross multiply
    8,261.44x = 12,380.52 × 6,403.86
  4. Step 4: Simplify right side
    8,261.44x = 79,283,116.81
  5. Step 5: Solve for x
    x = 79,283,116.81/8,261.44
  6. Step 6: Final answer
    x = 9,596.77

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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.