Home / 3,715.80-5,127.94-2,144

Finding the Fourth Proportional to 3,715.80, 5,127.94 and 2,144

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Solution

The fourth proportional to 3,715.80, 5,127.94 and 2,144 is: 2,958.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,715.80 : 5,127.94 = 2,144 : x
  2. Step 2: Convert to fraction form
    3,715.80/5,127.94 = 2,144/x
  3. Step 3: Cross multiply
    3,715.80x = 5,127.94 × 2,144
  4. Step 4: Simplify right side
    3,715.80x = 10,994,303.36
  5. Step 5: Solve for x
    x = 10,994,303.36/3,715.80
  6. Step 6: Final answer
    x = 2,958.80

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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.