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Finding the Fourth Proportional to 8,130.94, 12,186.99 and 3,739.18

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Solution

The fourth proportional to 8,130.94, 12,186.99 and 3,739.18 is: 5,604.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,130.94 : 12,186.99 = 3,739.18 : x
  2. Step 2: Convert to fraction form
    8,130.94/12,186.99 = 3,739.18/x
  3. Step 3: Cross multiply
    8,130.94x = 12,186.99 × 3,739.18
  4. Step 4: Simplify right side
    8,130.94x = 45,569,349.27
  5. Step 5: Solve for x
    x = 45,569,349.27/8,130.94
  6. Step 6: Final answer
    x = 5,604.44

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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.