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Finding the Fourth Proportional to 7,774.76, 11,662.14 and 3,154.52

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Solution

The fourth proportional to 7,774.76, 11,662.14 and 3,154.52 is: 4,731.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,774.76 : 11,662.14 = 3,154.52 : x
  2. Step 2: Convert to fraction form
    7,774.76/11,662.14 = 3,154.52/x
  3. Step 3: Cross multiply
    7,774.76x = 11,662.14 × 3,154.52
  4. Step 4: Simplify right side
    7,774.76x = 36,788,453.87
  5. Step 5: Solve for x
    x = 36,788,453.87/7,774.76
  6. Step 6: Final answer
    x = 4,731.78

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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.