Home / 3,811.20-5,715.36-1,731.84

Finding the Fourth Proportional to 3,811.20, 5,715.36 and 1,731.84

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Solution

The fourth proportional to 3,811.20, 5,715.36 and 1,731.84 is: 2,597.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,811.20 : 5,715.36 = 1,731.84 : x
  2. Step 2: Convert to fraction form
    3,811.20/5,715.36 = 1,731.84/x
  3. Step 3: Cross multiply
    3,811.20x = 5,715.36 × 1,731.84
  4. Step 4: Simplify right side
    3,811.20x = 9,898,089.06
  5. Step 5: Solve for x
    x = 9,898,089.06/3,811.20
  6. Step 6: Final answer
    x = 2,597.11

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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.