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Finding the Fourth Proportional to 3,387.96, 5,083.47 and 1,308.42

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Solution

The fourth proportional to 3,387.96, 5,083.47 and 1,308.42 is: 1,963.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,387.96 : 5,083.47 = 1,308.42 : x
  2. Step 2: Convert to fraction form
    3,387.96/5,083.47 = 1,308.42/x
  3. Step 3: Cross multiply
    3,387.96x = 5,083.47 × 1,308.42
  4. Step 4: Simplify right side
    3,387.96x = 6,651,313.82
  5. Step 5: Solve for x
    x = 6,651,313.82/3,387.96
  6. Step 6: Final answer
    x = 1,963.22

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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.