Home / 3,711.96-5,122.58-2,221.02

Finding the Fourth Proportional to 3,711.96, 5,122.58 and 2,221.02

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Solution

The fourth proportional to 3,711.96, 5,122.58 and 2,221.02 is: 3,065.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,711.96 : 5,122.58 = 2,221.02 : x
  2. Step 2: Convert to fraction form
    3,711.96/5,122.58 = 2,221.02/x
  3. Step 3: Cross multiply
    3,711.96x = 5,122.58 × 2,221.02
  4. Step 4: Simplify right side
    3,711.96x = 11,377,341.53
  5. Step 5: Solve for x
    x = 11,377,341.53/3,711.96
  6. Step 6: Final answer
    x = 3,065.05

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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.