Home / 3,186.73-4,779.96-1,312.39

Finding the Fourth Proportional to 3,186.73, 4,779.96 and 1,312.39

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Solution

The fourth proportional to 3,186.73, 4,779.96 and 1,312.39 is: 1,968.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,186.73 : 4,779.96 = 1,312.39 : x
  2. Step 2: Convert to fraction form
    3,186.73/4,779.96 = 1,312.39/x
  3. Step 3: Cross multiply
    3,186.73x = 4,779.96 × 1,312.39
  4. Step 4: Simplify right side
    3,186.73x = 6,273,171.70
  5. Step 5: Solve for x
    x = 6,273,171.70/3,186.73
  6. Step 6: Final answer
    x = 1,968.53

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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.