Home / 2,152.92-2,971.09-1,208.79

Finding the Fourth Proportional to 2,152.92, 2,971.09 and 1,208.79

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Solution

The fourth proportional to 2,152.92, 2,971.09 and 1,208.79 is: 1,668.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,152.92 : 2,971.09 = 1,208.79 : x
  2. Step 2: Convert to fraction form
    2,152.92/2,971.09 = 1,208.79/x
  3. Step 3: Cross multiply
    2,152.92x = 2,971.09 × 1,208.79
  4. Step 4: Simplify right side
    2,152.92x = 3,591,425.39
  5. Step 5: Solve for x
    x = 3,591,425.39/2,152.92
  6. Step 6: Final answer
    x = 1,668.16

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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.