Home / 7,986.20-11,021.29-4,449.41

Finding the Fourth Proportional to 7,986.20, 11,021.29 and 4,449.41

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Solution

The fourth proportional to 7,986.20, 11,021.29 and 4,449.41 is: 6,140.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,986.20 : 11,021.29 = 4,449.41 : x
  2. Step 2: Convert to fraction form
    7,986.20/11,021.29 = 4,449.41/x
  3. Step 3: Cross multiply
    7,986.20x = 11,021.29 × 4,449.41
  4. Step 4: Simplify right side
    7,986.20x = 49,038,237.94
  5. Step 5: Solve for x
    x = 49,038,237.94/7,986.20
  6. Step 6: Final answer
    x = 6,140.37

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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.