Home / 7,724.14-10,660.46-4,891.78

Finding the Fourth Proportional to 7,724.14, 10,660.46 and 4,891.78

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Solution

The fourth proportional to 7,724.14, 10,660.46 and 4,891.78 is: 6,751.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,724.14 : 10,660.46 = 4,891.78 : x
  2. Step 2: Convert to fraction form
    7,724.14/10,660.46 = 4,891.78/x
  3. Step 3: Cross multiply
    7,724.14x = 10,660.46 × 4,891.78
  4. Step 4: Simplify right side
    7,724.14x = 52,148,625.02
  5. Step 5: Solve for x
    x = 52,148,625.02/7,724.14
  6. Step 6: Final answer
    x = 6,751.38

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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.