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Finding the Fourth Proportional to 6,611.22, 9,913.32 and 2,909.16

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Solution

The fourth proportional to 6,611.22, 9,913.32 and 2,909.16 is: 4,362.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,611.22 : 9,913.32 = 2,909.16 : x
  2. Step 2: Convert to fraction form
    6,611.22/9,913.32 = 2,909.16/x
  3. Step 3: Cross multiply
    6,611.22x = 9,913.32 × 2,909.16
  4. Step 4: Simplify right side
    6,611.22x = 28,839,434.01
  5. Step 5: Solve for x
    x = 28,839,434.01/6,611.22
  6. Step 6: Final answer
    x = 4,362.20

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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.