Home / 1,863.10-2,790.60-1,620.10

Finding the Fourth Proportional to 1,863.10, 2,790.60 and 1,620.10

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Solution

The fourth proportional to 1,863.10, 2,790.60 and 1,620.10 is: 2,426.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,863.10 : 2,790.60 = 1,620.10 : x
  2. Step 2: Convert to fraction form
    1,863.10/2,790.60 = 1,620.10/x
  3. Step 3: Cross multiply
    1,863.10x = 2,790.60 × 1,620.10
  4. Step 4: Simplify right side
    1,863.10x = 4,521,051.06
  5. Step 5: Solve for x
    x = 4,521,051.06/1,863.10
  6. Step 6: Final answer
    x = 2,426.63

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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.