Home / 8,668.12-11,968.44-5,315.56

Finding the Fourth Proportional to 8,668.12, 11,968.44 and 5,315.56

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Solution

The fourth proportional to 8,668.12, 11,968.44 and 5,315.56 is: 7,339.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,668.12 : 11,968.44 = 5,315.56 : x
  2. Step 2: Convert to fraction form
    8,668.12/11,968.44 = 5,315.56/x
  3. Step 3: Cross multiply
    8,668.12x = 11,968.44 × 5,315.56
  4. Step 4: Simplify right side
    8,668.12x = 63,618,960.93
  5. Step 5: Solve for x
    x = 63,618,960.93/8,668.12
  6. Step 6: Final answer
    x = 7,339.42

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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.