Home / 1,788.58-2,465.64-1,290.43

Finding the Fourth Proportional to 1,788.58, 2,465.64 and 1,290.43

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Solution

The fourth proportional to 1,788.58, 2,465.64 and 1,290.43 is: 1,778.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,788.58 : 2,465.64 = 1,290.43 : x
  2. Step 2: Convert to fraction form
    1,788.58/2,465.64 = 1,290.43/x
  3. Step 3: Cross multiply
    1,788.58x = 2,465.64 × 1,290.43
  4. Step 4: Simplify right side
    1,788.58x = 3,181,738.91
  5. Step 5: Solve for x
    x = 3,181,738.91/1,788.58
  6. Step 6: Final answer
    x = 1,778.92

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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.