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Finding the Fourth Proportional to 8,151.14, 12,218.16 and 3,771.47

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Solution

The fourth proportional to 8,151.14, 12,218.16 and 3,771.47 is: 5,653.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,151.14 : 12,218.16 = 3,771.47 : x
  2. Step 2: Convert to fraction form
    8,151.14/12,218.16 = 3,771.47/x
  3. Step 3: Cross multiply
    8,151.14x = 12,218.16 × 3,771.47
  4. Step 4: Simplify right side
    8,151.14x = 46,080,423.90
  5. Step 5: Solve for x
    x = 46,080,423.90/8,151.14
  6. Step 6: Final answer
    x = 5,653.25

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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.