Home / 3,191.97-4,779.75-1,955.64

Finding the Fourth Proportional to 3,191.97, 4,779.75 and 1,955.64

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Solution

The fourth proportional to 3,191.97, 4,779.75 and 1,955.64 is: 2,928.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,191.97 : 4,779.75 = 1,955.64 : x
  2. Step 2: Convert to fraction form
    3,191.97/4,779.75 = 1,955.64/x
  3. Step 3: Cross multiply
    3,191.97x = 4,779.75 × 1,955.64
  4. Step 4: Simplify right side
    3,191.97x = 9,347,495.55
  5. Step 5: Solve for x
    x = 9,347,495.55/3,191.97
  6. Step 6: Final answer
    x = 2,928.44

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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.