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Finding the Fourth Proportional to 5,891.98, 8,131.45 and 3,239.90

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Solution

The fourth proportional to 5,891.98, 8,131.45 and 3,239.90 is: 4,471.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,891.98 : 8,131.45 = 3,239.90 : x
  2. Step 2: Convert to fraction form
    5,891.98/8,131.45 = 3,239.90/x
  3. Step 3: Cross multiply
    5,891.98x = 8,131.45 × 3,239.90
  4. Step 4: Simplify right side
    5,891.98x = 26,345,084.86
  5. Step 5: Solve for x
    x = 26,345,084.86/5,891.98
  6. Step 6: Final answer
    x = 4,471.35

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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.