Home / 3,580.21-4,940.97-1,987.36

Finding the Fourth Proportional to 3,580.21, 4,940.97 and 1,987.36

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Solution

The fourth proportional to 3,580.21, 4,940.97 and 1,987.36 is: 2,742.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,580.21 : 4,940.97 = 1,987.36 : x
  2. Step 2: Convert to fraction form
    3,580.21/4,940.97 = 1,987.36/x
  3. Step 3: Cross multiply
    3,580.21x = 4,940.97 × 1,987.36
  4. Step 4: Simplify right side
    3,580.21x = 9,819,486.14
  5. Step 5: Solve for x
    x = 9,819,486.14/3,580.21
  6. Step 6: Final answer
    x = 2,742.71

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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.