Home / 5,716.59-7,881.33-4,121.90

Finding the Fourth Proportional to 5,716.59, 7,881.33 and 4,121.90

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Solution

The fourth proportional to 5,716.59, 7,881.33 and 4,121.90 is: 5,682.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,716.59 : 7,881.33 = 4,121.90 : x
  2. Step 2: Convert to fraction form
    5,716.59/7,881.33 = 4,121.90/x
  3. Step 3: Cross multiply
    5,716.59x = 7,881.33 × 4,121.90
  4. Step 4: Simplify right side
    5,716.59x = 32,486,054.13
  5. Step 5: Solve for x
    x = 32,486,054.13/5,716.59
  6. Step 6: Final answer
    x = 5,682.77

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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.