Home / 8,512.47-12,768.57-5,181.62

Finding the Fourth Proportional to 8,512.47, 12,768.57 and 5,181.62

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Solution

The fourth proportional to 8,512.47, 12,768.57 and 5,181.62 is: 7,772.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,512.47 : 12,768.57 = 5,181.62 : x
  2. Step 2: Convert to fraction form
    8,512.47/12,768.57 = 5,181.62/x
  3. Step 3: Cross multiply
    8,512.47x = 12,768.57 × 5,181.62
  4. Step 4: Simplify right side
    8,512.47x = 66,161,813.84
  5. Step 5: Solve for x
    x = 66,161,813.84/8,512.47
  6. Step 6: Final answer
    x = 7,772.34

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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.