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Finding the Fourth Proportional to 3,812.67, 5,718.70 and 1,473.80

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Solution

The fourth proportional to 3,812.67, 5,718.70 and 1,473.80 is: 2,210.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,812.67 : 5,718.70 = 1,473.80 : x
  2. Step 2: Convert to fraction form
    3,812.67/5,718.70 = 1,473.80/x
  3. Step 3: Cross multiply
    3,812.67x = 5,718.70 × 1,473.80
  4. Step 4: Simplify right side
    3,812.67x = 8,428,193.31
  5. Step 5: Solve for x
    x = 8,428,193.31/3,812.67
  6. Step 6: Final answer
    x = 2,210.58

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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.