Home / 2,161.55-2,983.23-1,217.53

Finding the Fourth Proportional to 2,161.55, 2,983.23 and 1,217.53

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Solution

The fourth proportional to 2,161.55, 2,983.23 and 1,217.53 is: 1,680.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,161.55 : 2,983.23 = 1,217.53 : x
  2. Step 2: Convert to fraction form
    2,161.55/2,983.23 = 1,217.53/x
  3. Step 3: Cross multiply
    2,161.55x = 2,983.23 × 1,217.53
  4. Step 4: Simplify right side
    2,161.55x = 3,632,164.56
  5. Step 5: Solve for x
    x = 3,632,164.56/2,161.55
  6. Step 6: Final answer
    x = 1,680.35

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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.