Home / 3,720.66-5,131.58-3,295.74

Finding the Fourth Proportional to 3,720.66, 5,131.58 and 3,295.74

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Solution

The fourth proportional to 3,720.66, 5,131.58 and 3,295.74 is: 4,545.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,720.66 : 5,131.58 = 3,295.74 : x
  2. Step 2: Convert to fraction form
    3,720.66/5,131.58 = 3,295.74/x
  3. Step 3: Cross multiply
    3,720.66x = 5,131.58 × 3,295.74
  4. Step 4: Simplify right side
    3,720.66x = 16,912,353.47
  5. Step 5: Solve for x
    x = 16,912,353.47/3,720.66
  6. Step 6: Final answer
    x = 4,545.53

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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.