Home / 7,986.64-11,021.82-4,449.76

Finding the Fourth Proportional to 7,986.64, 11,021.82 and 4,449.76

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Solution

The fourth proportional to 7,986.64, 11,021.82 and 4,449.76 is: 6,140.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,986.64 : 11,021.82 = 4,449.76 : x
  2. Step 2: Convert to fraction form
    7,986.64/11,021.82 = 4,449.76/x
  3. Step 3: Cross multiply
    7,986.64x = 11,021.82 × 4,449.76
  4. Step 4: Simplify right side
    7,986.64x = 49,044,453.76
  5. Step 5: Solve for x
    x = 49,044,453.76/7,986.64
  6. Step 6: Final answer
    x = 6,140.81

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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.