Home / 3,191.41-4,778.91-1,955.07

Finding the Fourth Proportional to 3,191.41, 4,778.91 and 1,955.07

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Solution

The fourth proportional to 3,191.41, 4,778.91 and 1,955.07 is: 2,927.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,191.41 : 4,778.91 = 1,955.07 : x
  2. Step 2: Convert to fraction form
    3,191.41/4,778.91 = 1,955.07/x
  3. Step 3: Cross multiply
    3,191.41x = 4,778.91 × 1,955.07
  4. Step 4: Simplify right side
    3,191.41x = 9,343,103.57
  5. Step 5: Solve for x
    x = 9,343,103.57/3,191.41
  6. Step 6: Final answer
    x = 2,927.58

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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.