Home / 2,831.95-4,246.20-1,271.65

Finding the Fourth Proportional to 2,831.95, 4,246.20 and 1,271.65

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Solution

The fourth proportional to 2,831.95, 4,246.20 and 1,271.65 is: 1,906.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,831.95 : 4,246.20 = 1,271.65 : x
  2. Step 2: Convert to fraction form
    2,831.95/4,246.20 = 1,271.65/x
  3. Step 3: Cross multiply
    2,831.95x = 4,246.20 × 1,271.65
  4. Step 4: Simplify right side
    2,831.95x = 5,399,680.23
  5. Step 5: Solve for x
    x = 5,399,680.23/2,831.95
  6. Step 6: Final answer
    x = 1,906.70

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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.