Home / 7,257.37-10,885.25-1,992.78

Finding the Fourth Proportional to 7,257.37, 10,885.25 and 1,992.78

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Solution

The fourth proportional to 7,257.37, 10,885.25 and 1,992.78 is: 2,988.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,257.37 : 10,885.25 = 1,992.78 : x
  2. Step 2: Convert to fraction form
    7,257.37/10,885.25 = 1,992.78/x
  3. Step 3: Cross multiply
    7,257.37x = 10,885.25 × 1,992.78
  4. Step 4: Simplify right side
    7,257.37x = 21,691,908.50
  5. Step 5: Solve for x
    x = 21,691,908.50/7,257.37
  6. Step 6: Final answer
    x = 2,988.95

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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.