Home / 7,668.36-11,501.88-2,121.28

Finding the Fourth Proportional to 7,668.36, 11,501.88 and 2,121.28

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Solution

The fourth proportional to 7,668.36, 11,501.88 and 2,121.28 is: 3,181.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,668.36 : 11,501.88 = 2,121.28 : x
  2. Step 2: Convert to fraction form
    7,668.36/11,501.88 = 2,121.28/x
  3. Step 3: Cross multiply
    7,668.36x = 11,501.88 × 2,121.28
  4. Step 4: Simplify right side
    7,668.36x = 24,398,708.01
  5. Step 5: Solve for x
    x = 24,398,708.01/7,668.36
  6. Step 6: Final answer
    x = 3,181.74

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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.