Home / 3,811.18-5,705.52-2,817.40

Finding the Fourth Proportional to 3,811.18, 5,705.52 and 2,817.40

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Solution

The fourth proportional to 3,811.18, 5,705.52 and 2,817.40 is: 4,217.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,811.18 : 5,705.52 = 2,817.40 : x
  2. Step 2: Convert to fraction form
    3,811.18/5,705.52 = 2,817.40/x
  3. Step 3: Cross multiply
    3,811.18x = 5,705.52 × 2,817.40
  4. Step 4: Simplify right side
    3,811.18x = 16,074,703.52
  5. Step 5: Solve for x
    x = 16,074,703.52/3,811.18
  6. Step 6: Final answer
    x = 4,217.78

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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.