Home / 1,790.60-2,682.30-1,243.40

Finding the Fourth Proportional to 1,790.60, 2,682.30 and 1,243.40

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Solution

The fourth proportional to 1,790.60, 2,682.30 and 1,243.40 is: 1,862.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,790.60 : 2,682.30 = 1,243.40 : x
  2. Step 2: Convert to fraction form
    1,790.60/2,682.30 = 1,243.40/x
  3. Step 3: Cross multiply
    1,790.60x = 2,682.30 × 1,243.40
  4. Step 4: Simplify right side
    1,790.60x = 3,335,171.82
  5. Step 5: Solve for x
    x = 3,335,171.82/1,790.60
  6. Step 6: Final answer
    x = 1,862.60

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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.