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Finding the Fourth Proportional to 7,990.94, 11,987.26 and 3,064.76

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Solution

The fourth proportional to 7,990.94, 11,987.26 and 3,064.76 is: 4,597.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,990.94 : 11,987.26 = 3,064.76 : x
  2. Step 2: Convert to fraction form
    7,990.94/11,987.26 = 3,064.76/x
  3. Step 3: Cross multiply
    7,990.94x = 11,987.26 × 3,064.76
  4. Step 4: Simplify right side
    7,990.94x = 36,738,074.96
  5. Step 5: Solve for x
    x = 36,738,074.96/7,990.94
  6. Step 6: Final answer
    x = 4,597.47

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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.