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Finding the Fourth Proportional to 7,990.77, 11,987.88 and 2,444.50

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Solution

The fourth proportional to 7,990.77, 11,987.88 and 2,444.50 is: 3,667.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,990.77 : 11,987.88 = 2,444.50 : x
  2. Step 2: Convert to fraction form
    7,990.77/11,987.88 = 2,444.50/x
  3. Step 3: Cross multiply
    7,990.77x = 11,987.88 × 2,444.50
  4. Step 4: Simplify right side
    7,990.77x = 29,304,372.66
  5. Step 5: Solve for x
    x = 29,304,372.66/7,990.77
  6. Step 6: Final answer
    x = 3,667.28

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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.