Home / 7,109.16-10,668.32-3,213.60

Finding the Fourth Proportional to 7,109.16, 10,668.32 and 3,213.60

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Solution

The fourth proportional to 7,109.16, 10,668.32 and 3,213.60 is: 4,822.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,109.16 : 10,668.32 = 3,213.60 : x
  2. Step 2: Convert to fraction form
    7,109.16/10,668.32 = 3,213.60/x
  3. Step 3: Cross multiply
    7,109.16x = 10,668.32 × 3,213.60
  4. Step 4: Simplify right side
    7,109.16x = 34,283,713.15
  5. Step 5: Solve for x
    x = 34,283,713.15/7,109.16
  6. Step 6: Final answer
    x = 4,822.47

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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.