Home / 1,685.73-2,529.48-1,274.75

Finding the Fourth Proportional to 1,685.73, 2,529.48 and 1,274.75

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Solution

The fourth proportional to 1,685.73, 2,529.48 and 1,274.75 is: 1,912.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,685.73 : 2,529.48 = 1,274.75 : x
  2. Step 2: Convert to fraction form
    1,685.73/2,529.48 = 1,274.75/x
  3. Step 3: Cross multiply
    1,685.73x = 2,529.48 × 1,274.75
  4. Step 4: Simplify right side
    1,685.73x = 3,224,454.63
  5. Step 5: Solve for x
    x = 3,224,454.63/1,685.73
  6. Step 6: Final answer
    x = 1,912.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.