Home / 1,208.58-1,804.21-1,155.39

Finding the Fourth Proportional to 1,208.58, 1,804.21 and 1,155.39

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Solution

The fourth proportional to 1,208.58, 1,804.21 and 1,155.39 is: 1,724.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,208.58 : 1,804.21 = 1,155.39 : x
  2. Step 2: Convert to fraction form
    1,208.58/1,804.21 = 1,155.39/x
  3. Step 3: Cross multiply
    1,208.58x = 1,804.21 × 1,155.39
  4. Step 4: Simplify right side
    1,208.58x = 2,084,566.19
  5. Step 5: Solve for x
    x = 2,084,566.19/1,208.58
  6. Step 6: Final answer
    x = 1,724.81

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.