Home / 1,836.78-2,534.40-1,206.60

Finding the Fourth Proportional to 1,836.78, 2,534.40 and 1,206.60

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Solution

The fourth proportional to 1,836.78, 2,534.40 and 1,206.60 is: 1,664.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,836.78 : 2,534.40 = 1,206.60 : x
  2. Step 2: Convert to fraction form
    1,836.78/2,534.40 = 1,206.60/x
  3. Step 3: Cross multiply
    1,836.78x = 2,534.40 × 1,206.60
  4. Step 4: Simplify right side
    1,836.78x = 3,058,007.04
  5. Step 5: Solve for x
    x = 3,058,007.04/1,836.78
  6. Step 6: Final answer
    x = 1,664.87

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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.