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Finding the Fourth Proportional to 6,669.72, 9,203.72 and 3,836.40

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Solution

The fourth proportional to 6,669.72, 9,203.72 and 3,836.40 is: 5,293.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,669.72 : 9,203.72 = 3,836.40 : x
  2. Step 2: Convert to fraction form
    6,669.72/9,203.72 = 3,836.40/x
  3. Step 3: Cross multiply
    6,669.72x = 9,203.72 × 3,836.40
  4. Step 4: Simplify right side
    6,669.72x = 35,309,151.41
  5. Step 5: Solve for x
    x = 35,309,151.41/6,669.72
  6. Step 6: Final answer
    x = 5,293.95

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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.