Home / 1,961.65-2,707.29-1,122.43

Finding the Fourth Proportional to 1,961.65, 2,707.29 and 1,122.43

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Solution

The fourth proportional to 1,961.65, 2,707.29 and 1,122.43 is: 1,549.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,961.65 : 2,707.29 = 1,122.43 : x
  2. Step 2: Convert to fraction form
    1,961.65/2,707.29 = 1,122.43/x
  3. Step 3: Cross multiply
    1,961.65x = 2,707.29 × 1,122.43
  4. Step 4: Simplify right side
    1,961.65x = 3,038,743.51
  5. Step 5: Solve for x
    x = 3,038,743.51/1,961.65
  6. Step 6: Final answer
    x = 1,549.08

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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.