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Finding the Fourth Proportional to 5,781.68, 7,976.90 and 3,542.44

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Solution

The fourth proportional to 5,781.68, 7,976.90 and 3,542.44 is: 4,887.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,781.68 : 7,976.90 = 3,542.44 : x
  2. Step 2: Convert to fraction form
    5,781.68/7,976.90 = 3,542.44/x
  3. Step 3: Cross multiply
    5,781.68x = 7,976.90 × 3,542.44
  4. Step 4: Simplify right side
    5,781.68x = 28,257,689.64
  5. Step 5: Solve for x
    x = 28,257,689.64/5,781.68
  6. Step 6: Final answer
    x = 4,887.45

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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.