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Finding the Fourth Proportional to 2,871.80, 4,309.02 and 1,704.12

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Solution

The fourth proportional to 2,871.80, 4,309.02 and 1,704.12 is: 2,556.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,871.80 : 4,309.02 = 1,704.12 : x
  2. Step 2: Convert to fraction form
    2,871.80/4,309.02 = 1,704.12/x
  3. Step 3: Cross multiply
    2,871.80x = 4,309.02 × 1,704.12
  4. Step 4: Simplify right side
    2,871.80x = 7,343,087.16
  5. Step 5: Solve for x
    x = 7,343,087.16/2,871.80
  6. Step 6: Final answer
    x = 2,556.96

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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.