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Finding the Fourth Proportional to 8,146, 11,239.64 and 5,313.12

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Solution

The fourth proportional to 8,146, 11,239.64 and 5,313.12 is: 7,330.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,146 : 11,239.64 = 5,313.12 : x
  2. Step 2: Convert to fraction form
    8,146/11,239.64 = 5,313.12/x
  3. Step 3: Cross multiply
    8,146x = 11,239.64 × 5,313.12
  4. Step 4: Simplify right side
    8,146x = 59,717,556.08
  5. Step 5: Solve for x
    x = 59,717,556.08/8,146
  6. Step 6: Final answer
    x = 7,330.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.