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Finding the Fourth Proportional to 8,047.70, 12,075 and 3,368.81

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Solution

The fourth proportional to 8,047.70, 12,075 and 3,368.81 is: 5,054.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,047.70 : 12,075 = 3,368.81 : x
  2. Step 2: Convert to fraction form
    8,047.70/12,075 = 3,368.81/x
  3. Step 3: Cross multiply
    8,047.70x = 12,075 × 3,368.81
  4. Step 4: Simplify right side
    8,047.70x = 40,678,380.75
  5. Step 5: Solve for x
    x = 40,678,380.75/8,047.70
  6. Step 6: Final answer
    x = 5,054.66

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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.