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Finding the Fourth Proportional to 5,271.27, 7,908.11 and 1,808.31

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Solution

The fourth proportional to 5,271.27, 7,908.11 and 1,808.31 is: 2,712.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,271.27 : 7,908.11 = 1,808.31 : x
  2. Step 2: Convert to fraction form
    5,271.27/7,908.11 = 1,808.31/x
  3. Step 3: Cross multiply
    5,271.27x = 7,908.11 × 1,808.31
  4. Step 4: Simplify right side
    5,271.27x = 14,300,305.35
  5. Step 5: Solve for x
    x = 14,300,305.35/5,271.27
  6. Step 6: Final answer
    x = 2,712.88

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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.