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Finding the Fourth Proportional to 8,600.91, 12,907.48 and 3,921.54

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Solution

The fourth proportional to 8,600.91, 12,907.48 and 3,921.54 is: 5,885.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,600.91 : 12,907.48 = 3,921.54 : x
  2. Step 2: Convert to fraction form
    8,600.91/12,907.48 = 3,921.54/x
  3. Step 3: Cross multiply
    8,600.91x = 12,907.48 × 3,921.54
  4. Step 4: Simplify right side
    8,600.91x = 50,617,199.12
  5. Step 5: Solve for x
    x = 50,617,199.12/8,600.91
  6. Step 6: Final answer
    x = 5,885.10

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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.