Home / 1,617.43-2,232.90-1,089.09

Finding the Fourth Proportional to 1,617.43, 2,232.90 and 1,089.09

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Solution

The fourth proportional to 1,617.43, 2,232.90 and 1,089.09 is: 1,503.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,617.43 : 2,232.90 = 1,089.09 : x
  2. Step 2: Convert to fraction form
    1,617.43/2,232.90 = 1,089.09/x
  3. Step 3: Cross multiply
    1,617.43x = 2,232.90 × 1,089.09
  4. Step 4: Simplify right side
    1,617.43x = 2,431,829.06
  5. Step 5: Solve for x
    x = 2,431,829.06/1,617.43
  6. Step 6: Final answer
    x = 1,503.51

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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.