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Finding the Fourth Proportional to 7,611.03, 11,420.19 and 3,452.31

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Solution

The fourth proportional to 7,611.03, 11,420.19 and 3,452.31 is: 5,180.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,611.03 : 11,420.19 = 3,452.31 : x
  2. Step 2: Convert to fraction form
    7,611.03/11,420.19 = 3,452.31/x
  3. Step 3: Cross multiply
    7,611.03x = 11,420.19 × 3,452.31
  4. Step 4: Simplify right side
    7,611.03x = 39,426,036.14
  5. Step 5: Solve for x
    x = 39,426,036.14/7,611.03
  6. Step 6: Final answer
    x = 5,180.12

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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.