Home / 7,899.78-11,849.85-2,636.97

Finding the Fourth Proportional to 7,899.78, 11,849.85 and 2,636.97

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Solution

The fourth proportional to 7,899.78, 11,849.85 and 2,636.97 is: 3,955.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,899.78 : 11,849.85 = 2,636.97 : x
  2. Step 2: Convert to fraction form
    7,899.78/11,849.85 = 2,636.97/x
  3. Step 3: Cross multiply
    7,899.78x = 11,849.85 × 2,636.97
  4. Step 4: Simplify right side
    7,899.78x = 31,247,698.95
  5. Step 5: Solve for x
    x = 31,247,698.95/7,899.78
  6. Step 6: Final answer
    x = 3,955.52

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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.