Home / 2,161.41-2,982.63-1,217.25

Finding the Fourth Proportional to 2,161.41, 2,982.63 and 1,217.25

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Solution

The fourth proportional to 2,161.41, 2,982.63 and 1,217.25 is: 1,679.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,161.41 : 2,982.63 = 1,217.25 : x
  2. Step 2: Convert to fraction form
    2,161.41/2,982.63 = 1,217.25/x
  3. Step 3: Cross multiply
    2,161.41x = 2,982.63 × 1,217.25
  4. Step 4: Simplify right side
    2,161.41x = 3,630,606.37
  5. Step 5: Solve for x
    x = 3,630,606.37/2,161.41
  6. Step 6: Final answer
    x = 1,679.74

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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.