Home / 7,942.15-11,913.89-3,011.78

Finding the Fourth Proportional to 7,942.15, 11,913.89 and 3,011.78

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Solution

The fourth proportional to 7,942.15, 11,913.89 and 3,011.78 is: 4,517.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,942.15 : 11,913.89 = 3,011.78 : x
  2. Step 2: Convert to fraction form
    7,942.15/11,913.89 = 3,011.78/x
  3. Step 3: Cross multiply
    7,942.15x = 11,913.89 × 3,011.78
  4. Step 4: Simplify right side
    7,942.15x = 35,882,030.35
  5. Step 5: Solve for x
    x = 35,882,030.35/7,942.15
  6. Step 6: Final answer
    x = 4,517.92

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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.