Home / 8,656.96-12,986.58-3,975.88

Finding the Fourth Proportional to 8,656.96, 12,986.58 and 3,975.88

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Solution

The fourth proportional to 8,656.96, 12,986.58 and 3,975.88 is: 5,964.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,656.96 : 12,986.58 = 3,975.88 : x
  2. Step 2: Convert to fraction form
    8,656.96/12,986.58 = 3,975.88/x
  3. Step 3: Cross multiply
    8,656.96x = 12,986.58 × 3,975.88
  4. Step 4: Simplify right side
    8,656.96x = 51,633,083.69
  5. Step 5: Solve for x
    x = 51,633,083.69/8,656.96
  6. Step 6: Final answer
    x = 5,964.34

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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.