Home / 8,178.22-11,286.21-4,641.58

Finding the Fourth Proportional to 8,178.22, 11,286.21 and 4,641.58

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Solution

The fourth proportional to 8,178.22, 11,286.21 and 4,641.58 is: 6,405.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,178.22 : 11,286.21 = 4,641.58 : x
  2. Step 2: Convert to fraction form
    8,178.22/11,286.21 = 4,641.58/x
  3. Step 3: Cross multiply
    8,178.22x = 11,286.21 × 4,641.58
  4. Step 4: Simplify right side
    8,178.22x = 52,385,846.61
  5. Step 5: Solve for x
    x = 52,385,846.61/8,178.22
  6. Step 6: Final answer
    x = 6,405.53

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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.