Home / 7,902.74-11,855.85-2,972.38

Finding the Fourth Proportional to 7,902.74, 11,855.85 and 2,972.38

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Solution

The fourth proportional to 7,902.74, 11,855.85 and 2,972.38 is: 4,459.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,902.74 : 11,855.85 = 2,972.38 : x
  2. Step 2: Convert to fraction form
    7,902.74/11,855.85 = 2,972.38/x
  3. Step 3: Cross multiply
    7,902.74x = 11,855.85 × 2,972.38
  4. Step 4: Simplify right side
    7,902.74x = 35,240,091.42
  5. Step 5: Solve for x
    x = 35,240,091.42/7,902.74
  6. Step 6: Final answer
    x = 4,459.22

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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.