Home / 1,898.28-2,619.78-1,200.36

Finding the Fourth Proportional to 1,898.28, 2,619.78 and 1,200.36

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Solution

The fourth proportional to 1,898.28, 2,619.78 and 1,200.36 is: 1,656.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,898.28 : 2,619.78 = 1,200.36 : x
  2. Step 2: Convert to fraction form
    1,898.28/2,619.78 = 1,200.36/x
  3. Step 3: Cross multiply
    1,898.28x = 2,619.78 × 1,200.36
  4. Step 4: Simplify right side
    1,898.28x = 3,144,679.12
  5. Step 5: Solve for x
    x = 3,144,679.12/1,898.28
  6. Step 6: Final answer
    x = 1,656.59

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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.