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Finding the Fourth Proportional to 2,806.92, 3,875.22 and 1,864.04

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Solution

The fourth proportional to 2,806.92, 3,875.22 and 1,864.04 is: 2,573.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,806.92 : 3,875.22 = 1,864.04 : x
  2. Step 2: Convert to fraction form
    2,806.92/3,875.22 = 1,864.04/x
  3. Step 3: Cross multiply
    2,806.92x = 3,875.22 × 1,864.04
  4. Step 4: Simplify right side
    2,806.92x = 7,223,565.09
  5. Step 5: Solve for x
    x = 7,223,565.09/2,806.92
  6. Step 6: Final answer
    x = 2,573.48

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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.