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Finding the Fourth Proportional to 5,203.78, 7,805.82 and 1,308.26

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Solution

The fourth proportional to 5,203.78, 7,805.82 and 1,308.26 is: 1,962.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,203.78 : 7,805.82 = 1,308.26 : x
  2. Step 2: Convert to fraction form
    5,203.78/7,805.82 = 1,308.26/x
  3. Step 3: Cross multiply
    5,203.78x = 7,805.82 × 1,308.26
  4. Step 4: Simplify right side
    5,203.78x = 10,212,042.07
  5. Step 5: Solve for x
    x = 10,212,042.07/5,203.78
  6. Step 6: Final answer
    x = 1,962.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.