Home / 8,178.89-11,286.18-4,949.92

Finding the Fourth Proportional to 8,178.89, 11,286.18 and 4,949.92

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Solution

The fourth proportional to 8,178.89, 11,286.18 and 4,949.92 is: 6,830.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,178.89 : 11,286.18 = 4,949.92 : x
  2. Step 2: Convert to fraction form
    8,178.89/11,286.18 = 4,949.92/x
  3. Step 3: Cross multiply
    8,178.89x = 11,286.18 × 4,949.92
  4. Step 4: Simplify right side
    8,178.89x = 55,865,688.11
  5. Step 5: Solve for x
    x = 55,865,688.11/8,178.89
  6. Step 6: Final answer
    x = 6,830.47

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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.