Home / 3,811.56-5,715.42-1,619.08

Finding the Fourth Proportional to 3,811.56, 5,715.42 and 1,619.08

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Solution

The fourth proportional to 3,811.56, 5,715.42 and 1,619.08 is: 2,427.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,811.56 : 5,715.42 = 1,619.08 : x
  2. Step 2: Convert to fraction form
    3,811.56/5,715.42 = 1,619.08/x
  3. Step 3: Cross multiply
    3,811.56x = 5,715.42 × 1,619.08
  4. Step 4: Simplify right side
    3,811.56x = 9,253,722.21
  5. Step 5: Solve for x
    x = 9,253,722.21/3,811.56
  6. Step 6: Final answer
    x = 2,427.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.