Home / 7,278.72-10,912.36-3,382.60

Finding the Fourth Proportional to 7,278.72, 10,912.36 and 3,382.60

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Solution

The fourth proportional to 7,278.72, 10,912.36 and 3,382.60 is: 5,071.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,278.72 : 10,912.36 = 3,382.60 : x
  2. Step 2: Convert to fraction form
    7,278.72/10,912.36 = 3,382.60/x
  3. Step 3: Cross multiply
    7,278.72x = 10,912.36 × 3,382.60
  4. Step 4: Simplify right side
    7,278.72x = 36,912,148.94
  5. Step 5: Solve for x
    x = 36,912,148.94/7,278.72
  6. Step 6: Final answer
    x = 5,071.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.