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Finding the Fourth Proportional to 7,381.69, 11,073.90 and 2,116.48

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Solution

The fourth proportional to 7,381.69, 11,073.90 and 2,116.48 is: 3,175.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,381.69 : 11,073.90 = 2,116.48 : x
  2. Step 2: Convert to fraction form
    7,381.69/11,073.90 = 2,116.48/x
  3. Step 3: Cross multiply
    7,381.69x = 11,073.90 × 2,116.48
  4. Step 4: Simplify right side
    7,381.69x = 23,437,687.87
  5. Step 5: Solve for x
    x = 23,437,687.87/7,381.69
  6. Step 6: Final answer
    x = 3,175.11

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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.