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Finding the Fourth Proportional to 3,323.48, 4,978.83 and 1,858.19

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Solution

The fourth proportional to 3,323.48, 4,978.83 and 1,858.19 is: 2,783.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,323.48 : 4,978.83 = 1,858.19 : x
  2. Step 2: Convert to fraction form
    3,323.48/4,978.83 = 1,858.19/x
  3. Step 3: Cross multiply
    3,323.48x = 4,978.83 × 1,858.19
  4. Step 4: Simplify right side
    3,323.48x = 9,251,587.22
  5. Step 5: Solve for x
    x = 9,251,587.22/3,323.48
  6. Step 6: Final answer
    x = 2,783.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.