Home / 6,515.47-8,991.32-3,531.38

Finding the Fourth Proportional to 6,515.47, 8,991.32 and 3,531.38

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Solution

The fourth proportional to 6,515.47, 8,991.32 and 3,531.38 is: 4,873.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,515.47 : 8,991.32 = 3,531.38 : x
  2. Step 2: Convert to fraction form
    6,515.47/8,991.32 = 3,531.38/x
  3. Step 3: Cross multiply
    6,515.47x = 8,991.32 × 3,531.38
  4. Step 4: Simplify right side
    6,515.47x = 31,751,772.44
  5. Step 5: Solve for x
    x = 31,751,772.44/6,515.47
  6. Step 6: Final answer
    x = 4,873.29

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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.