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Finding the Fourth Proportional to 6,615.33, 9,129.39 and 3,631.34

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Solution

The fourth proportional to 6,615.33, 9,129.39 and 3,631.34 is: 5,011.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,615.33 : 9,129.39 = 3,631.34 : x
  2. Step 2: Convert to fraction form
    6,615.33/9,129.39 = 3,631.34/x
  3. Step 3: Cross multiply
    6,615.33x = 9,129.39 × 3,631.34
  4. Step 4: Simplify right side
    6,615.33x = 33,151,873.44
  5. Step 5: Solve for x
    x = 33,151,873.44/6,615.33
  6. Step 6: Final answer
    x = 5,011.37

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1.5x scale

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.