Home / 2,229.62-3,079.40-1,520.25

Finding the Fourth Proportional to 2,229.62, 3,079.40 and 1,520.25

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Solution

The fourth proportional to 2,229.62, 3,079.40 and 1,520.25 is: 2,099.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,229.62 : 3,079.40 = 1,520.25 : x
  2. Step 2: Convert to fraction form
    2,229.62/3,079.40 = 1,520.25/x
  3. Step 3: Cross multiply
    2,229.62x = 3,079.40 × 1,520.25
  4. Step 4: Simplify right side
    2,229.62x = 4,681,457.85
  5. Step 5: Solve for x
    x = 4,681,457.85/2,229.62
  6. Step 6: Final answer
    x = 2,099.67

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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.