Home / 3,187.78-4,779.60-1,107.63

Finding the Fourth Proportional to 3,187.78, 4,779.60 and 1,107.63

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Solution

The fourth proportional to 3,187.78, 4,779.60 and 1,107.63 is: 1,660.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,187.78 : 4,779.60 = 1,107.63 : x
  2. Step 2: Convert to fraction form
    3,187.78/4,779.60 = 1,107.63/x
  3. Step 3: Cross multiply
    3,187.78x = 4,779.60 × 1,107.63
  4. Step 4: Simplify right side
    3,187.78x = 5,294,028.35
  5. Step 5: Solve for x
    x = 5,294,028.35/3,187.78
  6. Step 6: Final answer
    x = 1,660.73

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1.5x scale

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.