Home / 1,581.65-2,185.59-1,207.97

Finding the Fourth Proportional to 1,581.65, 2,185.59 and 1,207.97

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Solution

The fourth proportional to 1,581.65, 2,185.59 and 1,207.97 is: 1,669.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,581.65 : 2,185.59 = 1,207.97 : x
  2. Step 2: Convert to fraction form
    1,581.65/2,185.59 = 1,207.97/x
  3. Step 3: Cross multiply
    1,581.65x = 2,185.59 × 1,207.97
  4. Step 4: Simplify right side
    1,581.65x = 2,640,127.15
  5. Step 5: Solve for x
    x = 2,640,127.15/1,581.65
  6. Step 6: Final answer
    x = 1,669.22

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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.