Home / 5,238.56-7,229.60-2,880.76

Finding the Fourth Proportional to 5,238.56, 7,229.60 and 2,880.76

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Solution

The fourth proportional to 5,238.56, 7,229.60 and 2,880.76 is: 3,975.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,238.56 : 7,229.60 = 2,880.76 : x
  2. Step 2: Convert to fraction form
    5,238.56/7,229.60 = 2,880.76/x
  3. Step 3: Cross multiply
    5,238.56x = 7,229.60 × 2,880.76
  4. Step 4: Simplify right side
    5,238.56x = 20,826,742.50
  5. Step 5: Solve for x
    x = 20,826,742.50/5,238.56
  6. Step 6: Final answer
    x = 3,975.66

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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.