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Finding the Fourth Proportional to 7,990.81, 11,986.21 and 2,444.16

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Solution

The fourth proportional to 7,990.81, 11,986.21 and 2,444.16 is: 3,666.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,990.81 : 11,986.21 = 2,444.16 : x
  2. Step 2: Convert to fraction form
    7,990.81/11,986.21 = 2,444.16/x
  3. Step 3: Cross multiply
    7,990.81x = 11,986.21 × 2,444.16
  4. Step 4: Simplify right side
    7,990.81x = 29,296,215.03
  5. Step 5: Solve for x
    x = 29,296,215.03/7,990.81
  6. Step 6: Final answer
    x = 3,666.24

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Similar ratio
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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.