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Finding the Fourth Proportional to 6,615.27, 9,918.09 and 3,103.38

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Solution

The fourth proportional to 6,615.27, 9,918.09 and 3,103.38 is: 4,652.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,615.27 : 9,918.09 = 3,103.38 : x
  2. Step 2: Convert to fraction form
    6,615.27/9,918.09 = 3,103.38/x
  3. Step 3: Cross multiply
    6,615.27x = 9,918.09 × 3,103.38
  4. Step 4: Simplify right side
    6,615.27x = 30,779,602.14
  5. Step 5: Solve for x
    x = 30,779,602.14/6,615.27
  6. Step 6: Final answer
    x = 4,652.81

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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.