Home / 7,271.28-10,028.88-4,912.56

Finding the Fourth Proportional to 7,271.28, 10,028.88 and 4,912.56

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Solution

The fourth proportional to 7,271.28, 10,028.88 and 4,912.56 is: 6,775.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,271.28 : 10,028.88 = 4,912.56 : x
  2. Step 2: Convert to fraction form
    7,271.28/10,028.88 = 4,912.56/x
  3. Step 3: Cross multiply
    7,271.28x = 10,028.88 × 4,912.56
  4. Step 4: Simplify right side
    7,271.28x = 49,267,474.73
  5. Step 5: Solve for x
    x = 49,267,474.73/7,271.28
  6. Step 6: Final answer
    x = 6,775.63

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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.