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Finding the Fourth Proportional to 6,614.91, 9,128.54 and 3,630.79

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Solution

The fourth proportional to 6,614.91, 9,128.54 and 3,630.79 is: 5,010.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,614.91 : 9,128.54 = 3,630.79 : x
  2. Step 2: Convert to fraction form
    6,614.91/9,128.54 = 3,630.79/x
  3. Step 3: Cross multiply
    6,614.91x = 9,128.54 × 3,630.79
  4. Step 4: Simplify right side
    6,614.91x = 33,143,811.75
  5. Step 5: Solve for x
    x = 33,143,811.75/6,614.91
  6. Step 6: Final answer
    x = 5,010.47

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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.