Home / 4,895.79-7,342.25-2,121.80

Finding the Fourth Proportional to 4,895.79, 7,342.25 and 2,121.80

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Solution

The fourth proportional to 4,895.79, 7,342.25 and 2,121.80 is: 3,182.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,895.79 : 7,342.25 = 2,121.80 : x
  2. Step 2: Convert to fraction form
    4,895.79/7,342.25 = 2,121.80/x
  3. Step 3: Cross multiply
    4,895.79x = 7,342.25 × 2,121.80
  4. Step 4: Simplify right side
    4,895.79x = 15,578,738.73
  5. Step 5: Solve for x
    x = 15,578,738.73/4,895.79
  6. Step 6: Final answer
    x = 3,182.07

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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.