Home / 7,771.35-11,660.47-4,072.70

Finding the Fourth Proportional to 7,771.35, 11,660.47 and 4,072.70

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Solution

The fourth proportional to 7,771.35, 11,660.47 and 4,072.70 is: 6,110.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,771.35 : 11,660.47 = 4,072.70 : x
  2. Step 2: Convert to fraction form
    7,771.35/11,660.47 = 4,072.70/x
  3. Step 3: Cross multiply
    7,771.35x = 11,660.47 × 4,072.70
  4. Step 4: Simplify right side
    7,771.35x = 47,489,596.17
  5. Step 5: Solve for x
    x = 47,489,596.17/7,771.35
  6. Step 6: Final answer
    x = 6,110.86

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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.