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Finding the Fourth Proportional to 8,647.54, 11,934.21 and 4,921.54

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Solution

The fourth proportional to 8,647.54, 11,934.21 and 4,921.54 is: 6,792.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,647.54 : 11,934.21 = 4,921.54 : x
  2. Step 2: Convert to fraction form
    8,647.54/11,934.21 = 4,921.54/x
  3. Step 3: Cross multiply
    8,647.54x = 11,934.21 × 4,921.54
  4. Step 4: Simplify right side
    8,647.54x = 58,734,691.88
  5. Step 5: Solve for x
    x = 58,734,691.88/8,647.54
  6. Step 6: Final answer
    x = 6,792.07

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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.