Home / 7,780.05-11,662.69-3,102.94

Finding the Fourth Proportional to 7,780.05, 11,662.69 and 3,102.94

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Solution

The fourth proportional to 7,780.05, 11,662.69 and 3,102.94 is: 4,651.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,780.05 : 11,662.69 = 3,102.94 : x
  2. Step 2: Convert to fraction form
    7,780.05/11,662.69 = 3,102.94/x
  3. Step 3: Cross multiply
    7,780.05x = 11,662.69 × 3,102.94
  4. Step 4: Simplify right side
    7,780.05x = 36,188,627.31
  5. Step 5: Solve for x
    x = 36,188,627.31/7,780.05
  6. Step 6: Final answer
    x = 4,651.47

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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.