Home / 3,185.54-4,779.88-1,431.75

Finding the Fourth Proportional to 3,185.54, 4,779.88 and 1,431.75

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Solution

The fourth proportional to 3,185.54, 4,779.88 and 1,431.75 is: 2,148.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,185.54 : 4,779.88 = 1,431.75 : x
  2. Step 2: Convert to fraction form
    3,185.54/4,779.88 = 1,431.75/x
  3. Step 3: Cross multiply
    3,185.54x = 4,779.88 × 1,431.75
  4. Step 4: Simplify right side
    3,185.54x = 6,843,607.54
  5. Step 5: Solve for x
    x = 6,843,607.54/3,185.54
  6. Step 6: Final answer
    x = 2,148.34

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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.