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Finding the Fourth Proportional to 7,990.88, 11,986.34 and 2,444.20

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Solution

The fourth proportional to 7,990.88, 11,986.34 and 2,444.20 is: 3,666.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,990.88 : 11,986.34 = 2,444.20 : x
  2. Step 2: Convert to fraction form
    7,990.88/11,986.34 = 2,444.20/x
  3. Step 3: Cross multiply
    7,990.88x = 11,986.34 × 2,444.20
  4. Step 4: Simplify right side
    7,990.88x = 29,297,012.23
  5. Step 5: Solve for x
    x = 29,297,012.23/7,990.88
  6. Step 6: Final answer
    x = 3,666.31

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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.