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Finding the Fourth Proportional to 1,611.74, 2,224.09 and 903.46

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Solution

The fourth proportional to 1,611.74, 2,224.09 and 903.46 is: 1,246.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,611.74 : 2,224.09 = 903.46 : x
  2. Step 2: Convert to fraction form
    1,611.74/2,224.09 = 903.46/x
  3. Step 3: Cross multiply
    1,611.74x = 2,224.09 × 903.46
  4. Step 4: Simplify right side
    1,611.74x = 2,009,376.35
  5. Step 5: Solve for x
    x = 2,009,376.35/1,611.74
  6. Step 6: Final answer
    x = 1,246.71

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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.