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Finding the Fourth Proportional to 2,806.92, 4,205.70 and 1,707.92

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Solution

The fourth proportional to 2,806.92, 4,205.70 and 1,707.92 is: 2,559.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,806.92 : 4,205.70 = 1,707.92 : x
  2. Step 2: Convert to fraction form
    2,806.92/4,205.70 = 1,707.92/x
  3. Step 3: Cross multiply
    2,806.92x = 4,205.70 × 1,707.92
  4. Step 4: Simplify right side
    2,806.92x = 7,182,999.14
  5. Step 5: Solve for x
    x = 7,182,999.14/2,806.92
  6. Step 6: Final answer
    x = 2,559.03

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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.