Home / 1,617.21-2,230.74-1,219.50

Finding the Fourth Proportional to 1,617.21, 2,230.74 and 1,219.50

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Solution

The fourth proportional to 1,617.21, 2,230.74 and 1,219.50 is: 1,682.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,617.21 : 2,230.74 = 1,219.50 : x
  2. Step 2: Convert to fraction form
    1,617.21/2,230.74 = 1,219.50/x
  3. Step 3: Cross multiply
    1,617.21x = 2,230.74 × 1,219.50
  4. Step 4: Simplify right side
    1,617.21x = 2,720,387.43
  5. Step 5: Solve for x
    x = 2,720,387.43/1,617.21
  6. Step 6: Final answer
    x = 1,682.15

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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.