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Finding the Fourth Proportional to 7,670.88, 11,505.84 and 3,771.84

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Solution

The fourth proportional to 7,670.88, 11,505.84 and 3,771.84 is: 5,657.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,670.88 : 11,505.84 = 3,771.84 : x
  2. Step 2: Convert to fraction form
    7,670.88/11,505.84 = 3,771.84/x
  3. Step 3: Cross multiply
    7,670.88x = 11,505.84 × 3,771.84
  4. Step 4: Simplify right side
    7,670.88x = 43,398,187.55
  5. Step 5: Solve for x
    x = 43,398,187.55/7,670.88
  6. Step 6: Final answer
    x = 5,657.52

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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.