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Finding the Fourth Proportional to 7,986.03, 11,020.91 and 4,449.47

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Solution

The fourth proportional to 7,986.03, 11,020.91 and 4,449.47 is: 6,140.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,986.03 : 11,020.91 = 4,449.47 : x
  2. Step 2: Convert to fraction form
    7,986.03/11,020.91 = 4,449.47/x
  3. Step 3: Cross multiply
    7,986.03x = 11,020.91 × 4,449.47
  4. Step 4: Simplify right side
    7,986.03x = 49,037,131.07
  5. Step 5: Solve for x
    x = 49,037,131.07/7,986.03
  6. Step 6: Final answer
    x = 6,140.36

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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.