Home / 7,815.42-11,723.09-1,972.04

Finding the Fourth Proportional to 7,815.42, 11,723.09 and 1,972.04

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Solution

The fourth proportional to 7,815.42, 11,723.09 and 1,972.04 is: 2,958.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,815.42 : 11,723.09 = 1,972.04 : x
  2. Step 2: Convert to fraction form
    7,815.42/11,723.09 = 1,972.04/x
  3. Step 3: Cross multiply
    7,815.42x = 11,723.09 × 1,972.04
  4. Step 4: Simplify right side
    7,815.42x = 23,118,377.89
  5. Step 5: Solve for x
    x = 23,118,377.89/7,815.42
  6. Step 6: Final answer
    x = 2,958.05

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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.