Home / 1,617.25-2,232.09-1,223.59

Finding the Fourth Proportional to 1,617.25, 2,232.09 and 1,223.59

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Solution

The fourth proportional to 1,617.25, 2,232.09 and 1,223.59 is: 1,688.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,617.25 : 2,232.09 = 1,223.59 : x
  2. Step 2: Convert to fraction form
    1,617.25/2,232.09 = 1,223.59/x
  3. Step 3: Cross multiply
    1,617.25x = 2,232.09 × 1,223.59
  4. Step 4: Simplify right side
    1,617.25x = 2,731,163.00
  5. Step 5: Solve for x
    x = 2,731,163.00/1,617.25
  6. Step 6: Final answer
    x = 1,688.77

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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.