Home / 3,720.87-5,135.50-2,229.66

Finding the Fourth Proportional to 3,720.87, 5,135.50 and 2,229.66

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Solution

The fourth proportional to 3,720.87, 5,135.50 and 2,229.66 is: 3,077.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,720.87 : 5,135.50 = 2,229.66 : x
  2. Step 2: Convert to fraction form
    3,720.87/5,135.50 = 2,229.66/x
  3. Step 3: Cross multiply
    3,720.87x = 5,135.50 × 2,229.66
  4. Step 4: Simplify right side
    3,720.87x = 11,450,421.72
  5. Step 5: Solve for x
    x = 11,450,421.72/3,720.87
  6. Step 6: Final answer
    x = 3,077.35

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1.5x scale

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.