Home / 3,187.12-4,779.74-1,338.18

Finding the Fourth Proportional to 3,187.12, 4,779.74 and 1,338.18

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Solution

The fourth proportional to 3,187.12, 4,779.74 and 1,338.18 is: 2,006.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,187.12 : 4,779.74 = 1,338.18 : x
  2. Step 2: Convert to fraction form
    3,187.12/4,779.74 = 1,338.18/x
  3. Step 3: Cross multiply
    3,187.12x = 4,779.74 × 1,338.18
  4. Step 4: Simplify right side
    3,187.12x = 6,396,152.47
  5. Step 5: Solve for x
    x = 6,396,152.47/3,187.12
  6. Step 6: Final answer
    x = 2,006.88

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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.