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Finding the Fourth Proportional to 5,308.39, 7,326.39 and 3,821.23

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Solution

The fourth proportional to 5,308.39, 7,326.39 and 3,821.23 is: 5,273.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,308.39 : 7,326.39 = 3,821.23 : x
  2. Step 2: Convert to fraction form
    5,308.39/7,326.39 = 3,821.23/x
  3. Step 3: Cross multiply
    5,308.39x = 7,326.39 × 3,821.23
  4. Step 4: Simplify right side
    5,308.39x = 27,995,784.63
  5. Step 5: Solve for x
    x = 27,995,784.63/5,308.39
  6. Step 6: Final answer
    x = 5,273.88

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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.