Home / 1,518.58-2,278.77-788.41

Finding the Fourth Proportional to 1,518.58, 2,278.77 and 788.41

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Solution

The fourth proportional to 1,518.58, 2,278.77 and 788.41 is: 1,183.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,518.58 : 2,278.77 = 788.41 : x
  2. Step 2: Convert to fraction form
    1,518.58/2,278.77 = 788.41/x
  3. Step 3: Cross multiply
    1,518.58x = 2,278.77 × 788.41
  4. Step 4: Simplify right side
    1,518.58x = 1,796,605.06
  5. Step 5: Solve for x
    x = 1,796,605.06/1,518.58
  6. Step 6: Final answer
    x = 1,183.08

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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.