Home / 8,178.39-11,286-4,775.99

Finding the Fourth Proportional to 8,178.39, 11,286 and 4,775.99

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Solution

The fourth proportional to 8,178.39, 11,286 and 4,775.99 is: 6,590.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,178.39 : 11,286 = 4,775.99 : x
  2. Step 2: Convert to fraction form
    8,178.39/11,286 = 4,775.99/x
  3. Step 3: Cross multiply
    8,178.39x = 11,286 × 4,775.99
  4. Step 4: Simplify right side
    8,178.39x = 53,901,766.71
  5. Step 5: Solve for x
    x = 53,901,766.71/8,178.39
  6. Step 6: Final answer
    x = 6,590.76

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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.