Home / 1,960.82-2,706.15-1,121.63

Finding the Fourth Proportional to 1,960.82, 2,706.15 and 1,121.63

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Solution

The fourth proportional to 1,960.82, 2,706.15 and 1,121.63 is: 1,547.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,960.82 : 2,706.15 = 1,121.63 : x
  2. Step 2: Convert to fraction form
    1,960.82/2,706.15 = 1,121.63/x
  3. Step 3: Cross multiply
    1,960.82x = 2,706.15 × 1,121.63
  4. Step 4: Simplify right side
    1,960.82x = 3,035,299.02
  5. Step 5: Solve for x
    x = 3,035,299.02/1,960.82
  6. Step 6: Final answer
    x = 1,547.97

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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.