Home / 1,908.27-2,858.40-1,214.60

Finding the Fourth Proportional to 1,908.27, 2,858.40 and 1,214.60

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Solution

The fourth proportional to 1,908.27, 2,858.40 and 1,214.60 is: 1,819.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,908.27 : 2,858.40 = 1,214.60 : x
  2. Step 2: Convert to fraction form
    1,908.27/2,858.40 = 1,214.60/x
  3. Step 3: Cross multiply
    1,908.27x = 2,858.40 × 1,214.60
  4. Step 4: Simplify right side
    1,908.27x = 3,471,798.35
  5. Step 5: Solve for x
    x = 3,471,798.35/1,908.27
  6. Step 6: Final answer
    x = 1,819.34

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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.