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Finding the Fourth Proportional to 8,045.70, 12,072 and 3,366.81

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Solution

The fourth proportional to 8,045.70, 12,072 and 3,366.81 is: 5,051.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,045.70 : 12,072 = 3,366.81 : x
  2. Step 2: Convert to fraction form
    8,045.70/12,072 = 3,366.81/x
  3. Step 3: Cross multiply
    8,045.70x = 12,072 × 3,366.81
  4. Step 4: Simplify right side
    8,045.70x = 40,644,130.32
  5. Step 5: Solve for x
    x = 40,644,130.32/8,045.70
  6. Step 6: Final answer
    x = 5,051.66

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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.