Home / 2,987.69-4,124.73-1,996.25

Finding the Fourth Proportional to 2,987.69, 4,124.73 and 1,996.25

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Solution

The fourth proportional to 2,987.69, 4,124.73 and 1,996.25 is: 2,755.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,987.69 : 4,124.73 = 1,996.25 : x
  2. Step 2: Convert to fraction form
    2,987.69/4,124.73 = 1,996.25/x
  3. Step 3: Cross multiply
    2,987.69x = 4,124.73 × 1,996.25
  4. Step 4: Simplify right side
    2,987.69x = 8,233,971.64
  5. Step 5: Solve for x
    x = 8,233,971.64/2,987.69
  6. Step 6: Final answer
    x = 2,755.97

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1.5x scale

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.