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Finding the Fourth Proportional to 11,670.10, 17,505.15 and 3,878.91

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Solution

The fourth proportional to 11,670.10, 17,505.15 and 3,878.91 is: 5,818.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,670.10 : 17,505.15 = 3,878.91 : x
  2. Step 2: Convert to fraction form
    11,670.10/17,505.15 = 3,878.91/x
  3. Step 3: Cross multiply
    11,670.10x = 17,505.15 × 3,878.91
  4. Step 4: Simplify right side
    11,670.10x = 67,900,901.39
  5. Step 5: Solve for x
    x = 67,900,901.39/11,670.10
  6. Step 6: Final answer
    x = 5,818.37

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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.