Home / 3,813.70-5,720.55-3,187.30

Finding the Fourth Proportional to 3,813.70, 5,720.55 and 3,187.30

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Solution

The fourth proportional to 3,813.70, 5,720.55 and 3,187.30 is: 4,780.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,813.70 : 5,720.55 = 3,187.30 : x
  2. Step 2: Convert to fraction form
    3,813.70/5,720.55 = 3,187.30/x
  3. Step 3: Cross multiply
    3,813.70x = 5,720.55 × 3,187.30
  4. Step 4: Simplify right side
    3,813.70x = 18,233,109.02
  5. Step 5: Solve for x
    x = 18,233,109.02/3,813.70
  6. Step 6: Final answer
    x = 4,780.95

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1.5x scale

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.