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Finding the Fourth Proportional to 5,755.88, 7,943.13 and 3,398.18

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Solution

The fourth proportional to 5,755.88, 7,943.13 and 3,398.18 is: 4,689.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,755.88 : 7,943.13 = 3,398.18 : x
  2. Step 2: Convert to fraction form
    5,755.88/7,943.13 = 3,398.18/x
  3. Step 3: Cross multiply
    5,755.88x = 7,943.13 × 3,398.18
  4. Step 4: Simplify right side
    5,755.88x = 26,992,145.79
  5. Step 5: Solve for x
    x = 26,992,145.79/5,755.88
  6. Step 6: Final answer
    x = 4,689.49

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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.