Home / 3,119.09-4,675.88-1,271.75

Finding the Fourth Proportional to 3,119.09, 4,675.88 and 1,271.75

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Solution

The fourth proportional to 3,119.09, 4,675.88 and 1,271.75 is: 1,906.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,119.09 : 4,675.88 = 1,271.75 : x
  2. Step 2: Convert to fraction form
    3,119.09/4,675.88 = 1,271.75/x
  3. Step 3: Cross multiply
    3,119.09x = 4,675.88 × 1,271.75
  4. Step 4: Simplify right side
    3,119.09x = 5,946,550.39
  5. Step 5: Solve for x
    x = 5,946,550.39/3,119.09
  6. Step 6: Final answer
    x = 1,906.50

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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.