Home / 5,135.15-7,086.51-2,777.29

Finding the Fourth Proportional to 5,135.15, 7,086.51 and 2,777.29

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Solution

The fourth proportional to 5,135.15, 7,086.51 and 2,777.29 is: 3,832.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,135.15 : 7,086.51 = 2,777.29 : x
  2. Step 2: Convert to fraction form
    5,135.15/7,086.51 = 2,777.29/x
  3. Step 3: Cross multiply
    5,135.15x = 7,086.51 × 2,777.29
  4. Step 4: Simplify right side
    5,135.15x = 19,681,279.47
  5. Step 5: Solve for x
    x = 19,681,279.47/5,135.15
  6. Step 6: Final answer
    x = 3,832.66

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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.