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Finding the Fourth Proportional to 6,515.88, 8,989.80 and 3,682.98

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Solution

The fourth proportional to 6,515.88, 8,989.80 and 3,682.98 is: 5,081.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,515.88 : 8,989.80 = 3,682.98 : x
  2. Step 2: Convert to fraction form
    6,515.88/8,989.80 = 3,682.98/x
  3. Step 3: Cross multiply
    6,515.88x = 8,989.80 × 3,682.98
  4. Step 4: Simplify right side
    6,515.88x = 33,109,257.61
  5. Step 5: Solve for x
    x = 33,109,257.61/6,515.88
  6. Step 6: Final answer
    x = 5,081.32

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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.