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Finding the Fourth Proportional to 8,045.70, 12,072.81 and 3,941.70

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Solution

The fourth proportional to 8,045.70, 12,072.81 and 3,941.70 is: 5,914.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,045.70 : 12,072.81 = 3,941.70 : x
  2. Step 2: Convert to fraction form
    8,045.70/12,072.81 = 3,941.70/x
  3. Step 3: Cross multiply
    8,045.70x = 12,072.81 × 3,941.70
  4. Step 4: Simplify right side
    8,045.70x = 47,587,395.18
  5. Step 5: Solve for x
    x = 47,587,395.18/8,045.70
  6. Step 6: Final answer
    x = 5,914.64

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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.