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Finding the Fourth Proportional to 8,825.31, 13,240.25 and 3,280.25

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Solution

The fourth proportional to 8,825.31, 13,240.25 and 3,280.25 is: 4,921.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,825.31 : 13,240.25 = 3,280.25 : x
  2. Step 2: Convert to fraction form
    8,825.31/13,240.25 = 3,280.25/x
  3. Step 3: Cross multiply
    8,825.31x = 13,240.25 × 3,280.25
  4. Step 4: Simplify right side
    8,825.31x = 43,431,247.46
  5. Step 5: Solve for x
    x = 43,431,247.46/8,825.31
  6. Step 6: Final answer
    x = 4,921.21

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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.