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Finding the Fourth Proportional to 8,672.10, 11,968.46 and 5,135.54

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Solution

The fourth proportional to 8,672.10, 11,968.46 and 5,135.54 is: 7,087.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,672.10 : 11,968.46 = 5,135.54 : x
  2. Step 2: Convert to fraction form
    8,672.10/11,968.46 = 5,135.54/x
  3. Step 3: Cross multiply
    8,672.10x = 11,968.46 × 5,135.54
  4. Step 4: Simplify right side
    8,672.10x = 61,464,438.81
  5. Step 5: Solve for x
    x = 61,464,438.81/8,672.10
  6. Step 6: Final answer
    x = 7,087.61

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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.