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Finding the Fourth Proportional to 8,039.95, 12,055.41 and 5,509.90

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Solution

The fourth proportional to 8,039.95, 12,055.41 and 5,509.90 is: 8,261.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,039.95 : 12,055.41 = 5,509.90 : x
  2. Step 2: Convert to fraction form
    8,039.95/12,055.41 = 5,509.90/x
  3. Step 3: Cross multiply
    8,039.95x = 12,055.41 × 5,509.90
  4. Step 4: Simplify right side
    8,039.95x = 66,424,103.56
  5. Step 5: Solve for x
    x = 66,424,103.56/8,039.95
  6. Step 6: Final answer
    x = 8,261.76

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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.