Home / 1,661.39-2,292.75-1,072.13

Finding the Fourth Proportional to 1,661.39, 2,292.75 and 1,072.13

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Solution

The fourth proportional to 1,661.39, 2,292.75 and 1,072.13 is: 1,479.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,661.39 : 2,292.75 = 1,072.13 : x
  2. Step 2: Convert to fraction form
    1,661.39/2,292.75 = 1,072.13/x
  3. Step 3: Cross multiply
    1,661.39x = 2,292.75 × 1,072.13
  4. Step 4: Simplify right side
    1,661.39x = 2,458,126.06
  5. Step 5: Solve for x
    x = 2,458,126.06/1,661.39
  6. Step 6: Final answer
    x = 1,479.56

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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.