Home / 2,421.77-3,629.00-1,187.68

Finding the Fourth Proportional to 2,421.77, 3,629.00 and 1,187.68

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Solution

The fourth proportional to 2,421.77, 3,629.00 and 1,187.68 is: 1,779.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,421.77 : 3,629.00 = 1,187.68 : x
  2. Step 2: Convert to fraction form
    2,421.77/3,629.00 = 1,187.68/x
  3. Step 3: Cross multiply
    2,421.77x = 3,629.00 × 1,187.68
  4. Step 4: Simplify right side
    2,421.77x = 4,310,091.42
  5. Step 5: Solve for x
    x = 4,310,091.42/2,421.77
  6. Step 6: Final answer
    x = 1,779.73

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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.