Home / 6,515.33-8,990.91-3,531.11

Finding the Fourth Proportional to 6,515.33, 8,990.91 and 3,531.11

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Solution

The fourth proportional to 6,515.33, 8,990.91 and 3,531.11 is: 4,872.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,515.33 : 8,990.91 = 3,531.11 : x
  2. Step 2: Convert to fraction form
    6,515.33/8,990.91 = 3,531.11/x
  3. Step 3: Cross multiply
    6,515.33x = 8,990.91 × 3,531.11
  4. Step 4: Simplify right side
    6,515.33x = 31,747,847.26
  5. Step 5: Solve for x
    x = 31,747,847.26/6,515.33
  6. Step 6: Final answer
    x = 4,872.80

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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.