Home / 7,181.65-9,911.45-4,198.49

Finding the Fourth Proportional to 7,181.65, 9,911.45 and 4,198.49

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Solution

The fourth proportional to 7,181.65, 9,911.45 and 4,198.49 is: 5,794.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,181.65 : 9,911.45 = 4,198.49 : x
  2. Step 2: Convert to fraction form
    7,181.65/9,911.45 = 4,198.49/x
  3. Step 3: Cross multiply
    7,181.65x = 9,911.45 × 4,198.49
  4. Step 4: Simplify right side
    7,181.65x = 41,613,123.71
  5. Step 5: Solve for x
    x = 41,613,123.71/7,181.65
  6. Step 6: Final answer
    x = 5,794.37

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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.