Home / 8,285.72-12,429-2,739.56

Finding the Fourth Proportional to 8,285.72, 12,429 and 2,739.56

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Solution

The fourth proportional to 8,285.72, 12,429 and 2,739.56 is: 4,109.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,285.72 : 12,429 = 2,739.56 : x
  2. Step 2: Convert to fraction form
    8,285.72/12,429 = 2,739.56/x
  3. Step 3: Cross multiply
    8,285.72x = 12,429 × 2,739.56
  4. Step 4: Simplify right side
    8,285.72x = 34,049,991.24
  5. Step 5: Solve for x
    x = 34,049,991.24/8,285.72
  6. Step 6: Final answer
    x = 4,109.48

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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.