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Finding the Fourth Proportional to 2,812.92, 3,880.52 and 1,804.02

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Solution

The fourth proportional to 2,812.92, 3,880.52 and 1,804.02 is: 2,488.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,812.92 : 3,880.52 = 1,804.02 : x
  2. Step 2: Convert to fraction form
    2,812.92/3,880.52 = 1,804.02/x
  3. Step 3: Cross multiply
    2,812.92x = 3,880.52 × 1,804.02
  4. Step 4: Simplify right side
    2,812.92x = 7,000,535.69
  5. Step 5: Solve for x
    x = 7,000,535.69/2,812.92
  6. Step 6: Final answer
    x = 2,488.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.