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Finding the Fourth Proportional to 7,968.99, 11,953.49 and 3,291.65

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Solution

The fourth proportional to 7,968.99, 11,953.49 and 3,291.65 is: 4,937.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,968.99 : 11,953.49 = 3,291.65 : x
  2. Step 2: Convert to fraction form
    7,968.99/11,953.49 = 3,291.65/x
  3. Step 3: Cross multiply
    7,968.99x = 11,953.49 × 3,291.65
  4. Step 4: Simplify right side
    7,968.99x = 39,346,629.13
  5. Step 5: Solve for x
    x = 39,346,629.13/7,968.99
  6. Step 6: Final answer
    x = 4,937.47

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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.