Home / 7,987.94-11,981.91-3,606.65

Finding the Fourth Proportional to 7,987.94, 11,981.91 and 3,606.65

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Solution

The fourth proportional to 7,987.94, 11,981.91 and 3,606.65 is: 5,409.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,987.94 : 11,981.91 = 3,606.65 : x
  2. Step 2: Convert to fraction form
    7,987.94/11,981.91 = 3,606.65/x
  3. Step 3: Cross multiply
    7,987.94x = 11,981.91 × 3,606.65
  4. Step 4: Simplify right side
    7,987.94x = 43,214,495.79
  5. Step 5: Solve for x
    x = 43,214,495.79/7,987.94
  6. Step 6: Final answer
    x = 5,409.97

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Similar ratio
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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.