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Finding the Fourth Proportional to 6,615.96, 9,914.76 and 2,912.64

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Solution

The fourth proportional to 6,615.96, 9,914.76 and 2,912.64 is: 4,364.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,615.96 : 9,914.76 = 2,912.64 : x
  2. Step 2: Convert to fraction form
    6,615.96/9,914.76 = 2,912.64/x
  3. Step 3: Cross multiply
    6,615.96x = 9,914.76 × 2,912.64
  4. Step 4: Simplify right side
    6,615.96x = 28,878,126.57
  5. Step 5: Solve for x
    x = 28,878,126.57/6,615.96
  6. Step 6: Final answer
    x = 4,364.92

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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.