Home / 7,974.78-11,007.68-5,455.94

Finding the Fourth Proportional to 7,974.78, 11,007.68 and 5,455.94

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Solution

The fourth proportional to 7,974.78, 11,007.68 and 5,455.94 is: 7,530.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,974.78 : 11,007.68 = 5,455.94 : x
  2. Step 2: Convert to fraction form
    7,974.78/11,007.68 = 5,455.94/x
  3. Step 3: Cross multiply
    7,974.78x = 11,007.68 × 5,455.94
  4. Step 4: Simplify right side
    7,974.78x = 60,057,159.30
  5. Step 5: Solve for x
    x = 60,057,159.30/7,974.78
  6. Step 6: Final answer
    x = 7,530.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.