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Finding the Fourth Proportional to 6,275.39, 8,656.44 and 3,913.43

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Solution

The fourth proportional to 6,275.39, 8,656.44 and 3,913.43 is: 5,398.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,275.39 : 8,656.44 = 3,913.43 : x
  2. Step 2: Convert to fraction form
    6,275.39/8,656.44 = 3,913.43/x
  3. Step 3: Cross multiply
    6,275.39x = 8,656.44 × 3,913.43
  4. Step 4: Simplify right side
    6,275.39x = 33,876,371.99
  5. Step 5: Solve for x
    x = 33,876,371.99/6,275.39
  6. Step 6: Final answer
    x = 5,398.29

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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.