Home / 7,678.96-11,519.93-2,998.78

Finding the Fourth Proportional to 7,678.96, 11,519.93 and 2,998.78

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Solution

The fourth proportional to 7,678.96, 11,519.93 and 2,998.78 is: 4,498.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,678.96 : 11,519.93 = 2,998.78 : x
  2. Step 2: Convert to fraction form
    7,678.96/11,519.93 = 2,998.78/x
  3. Step 3: Cross multiply
    7,678.96x = 11,519.93 × 2,998.78
  4. Step 4: Simplify right side
    7,678.96x = 34,545,735.69
  5. Step 5: Solve for x
    x = 34,545,735.69/7,678.96
  6. Step 6: Final answer
    x = 4,498.75

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1.5x scale

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.