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Finding the Fourth Proportional to 9,160.44, 12,640.03 and 5,181.46

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Solution

The fourth proportional to 9,160.44, 12,640.03 and 5,181.46 is: 7,149.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,160.44 : 12,640.03 = 5,181.46 : x
  2. Step 2: Convert to fraction form
    9,160.44/12,640.03 = 5,181.46/x
  3. Step 3: Cross multiply
    9,160.44x = 12,640.03 × 5,181.46
  4. Step 4: Simplify right side
    9,160.44x = 65,493,809.84
  5. Step 5: Solve for x
    x = 65,493,809.84/9,160.44
  6. Step 6: Final answer
    x = 7,149.64

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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.