Home / 7,986.20-11,020.80-4,449.33

Finding the Fourth Proportional to 7,986.20, 11,020.80 and 4,449.33

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Solution

The fourth proportional to 7,986.20, 11,020.80 and 4,449.33 is: 6,139.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,986.20 : 11,020.80 = 4,449.33 : x
  2. Step 2: Convert to fraction form
    7,986.20/11,020.80 = 4,449.33/x
  3. Step 3: Cross multiply
    7,986.20x = 11,020.80 × 4,449.33
  4. Step 4: Simplify right side
    7,986.20x = 49,035,176.06
  5. Step 5: Solve for x
    x = 49,035,176.06/7,986.20
  6. Step 6: Final answer
    x = 6,139.99

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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.