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Finding the Fourth Proportional to 6,515.25, 8,991.05 and 3,531.06

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Solution

The fourth proportional to 6,515.25, 8,991.05 and 3,531.06 is: 4,872.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,515.25 : 8,991.05 = 3,531.06 : x
  2. Step 2: Convert to fraction form
    6,515.25/8,991.05 = 3,531.06/x
  3. Step 3: Cross multiply
    6,515.25x = 8,991.05 × 3,531.06
  4. Step 4: Simplify right side
    6,515.25x = 31,747,919.36
  5. Step 5: Solve for x
    x = 31,747,919.36/6,515.25
  6. Step 6: Final answer
    x = 4,872.86

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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.