Home / 1,912.34-2,636.96-1,661.45

Finding the Fourth Proportional to 1,912.34, 2,636.96 and 1,661.45

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Solution

The fourth proportional to 1,912.34, 2,636.96 and 1,661.45 is: 2,290.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,912.34 : 2,636.96 = 1,661.45 : x
  2. Step 2: Convert to fraction form
    1,912.34/2,636.96 = 1,661.45/x
  3. Step 3: Cross multiply
    1,912.34x = 2,636.96 × 1,661.45
  4. Step 4: Simplify right side
    1,912.34x = 4,381,155.70
  5. Step 5: Solve for x
    x = 4,381,155.70/1,912.34
  6. Step 6: Final answer
    x = 2,290.99

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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.