Home / 7,981.74-11,964.96-3,820.65

Finding the Fourth Proportional to 7,981.74, 11,964.96 and 3,820.65

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Solution

The fourth proportional to 7,981.74, 11,964.96 and 3,820.65 is: 5,727.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,981.74 : 11,964.96 = 3,820.65 : x
  2. Step 2: Convert to fraction form
    7,981.74/11,964.96 = 3,820.65/x
  3. Step 3: Cross multiply
    7,981.74x = 11,964.96 × 3,820.65
  4. Step 4: Simplify right side
    7,981.74x = 45,713,924.42
  5. Step 5: Solve for x
    x = 45,713,924.42/7,981.74
  6. Step 6: Final answer
    x = 5,727.31

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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.