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Finding the Fourth Proportional to 6,660.63, 9,192.21 and 3,828.47

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Solution

The fourth proportional to 6,660.63, 9,192.21 and 3,828.47 is: 5,283.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,660.63 : 9,192.21 = 3,828.47 : x
  2. Step 2: Convert to fraction form
    6,660.63/9,192.21 = 3,828.47/x
  3. Step 3: Cross multiply
    6,660.63x = 9,192.21 × 3,828.47
  4. Step 4: Simplify right side
    6,660.63x = 35,192,039.90
  5. Step 5: Solve for x
    x = 35,192,039.90/6,660.63
  6. Step 6: Final answer
    x = 5,283.59

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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.