Home / 5,716.36-7,889.70-3,619

Finding the Fourth Proportional to 5,716.36, 7,889.70 and 3,619

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Solution

The fourth proportional to 5,716.36, 7,889.70 and 3,619 is: 4,994.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,716.36 : 7,889.70 = 3,619 : x
  2. Step 2: Convert to fraction form
    5,716.36/7,889.70 = 3,619/x
  3. Step 3: Cross multiply
    5,716.36x = 7,889.70 × 3,619
  4. Step 4: Simplify right side
    5,716.36x = 28,552,824.30
  5. Step 5: Solve for x
    x = 28,552,824.30/5,716.36
  6. Step 6: Final answer
    x = 4,994.93

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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.