Home / 3,581.40-4,942.26-1,987.96

Finding the Fourth Proportional to 3,581.40, 4,942.26 and 1,987.96

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Solution

The fourth proportional to 3,581.40, 4,942.26 and 1,987.96 is: 2,743.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,581.40 : 4,942.26 = 1,987.96 : x
  2. Step 2: Convert to fraction form
    3,581.40/4,942.26 = 1,987.96/x
  3. Step 3: Cross multiply
    3,581.40x = 4,942.26 × 1,987.96
  4. Step 4: Simplify right side
    3,581.40x = 9,824,997.86
  5. Step 5: Solve for x
    x = 9,824,997.86/3,581.40
  6. Step 6: Final answer
    x = 2,743.34

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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.