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Finding the Fourth Proportional to 1,611.12, 2,224.42 and 1,237.43

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Solution

The fourth proportional to 1,611.12, 2,224.42 and 1,237.43 is: 1,708.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,611.12 : 2,224.42 = 1,237.43 : x
  2. Step 2: Convert to fraction form
    1,611.12/2,224.42 = 1,237.43/x
  3. Step 3: Cross multiply
    1,611.12x = 2,224.42 × 1,237.43
  4. Step 4: Simplify right side
    1,611.12x = 2,752,557.85
  5. Step 5: Solve for x
    x = 2,752,557.85/1,611.12
  6. Step 6: Final answer
    x = 1,708.47

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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.