Home / 8,378.56-12,567.87-2,831.95

Finding the Fourth Proportional to 8,378.56, 12,567.87 and 2,831.95

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Solution

The fourth proportional to 8,378.56, 12,567.87 and 2,831.95 is: 4,247.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,378.56 : 12,567.87 = 2,831.95 : x
  2. Step 2: Convert to fraction form
    8,378.56/12,567.87 = 2,831.95/x
  3. Step 3: Cross multiply
    8,378.56x = 12,567.87 × 2,831.95
  4. Step 4: Simplify right side
    8,378.56x = 35,591,579.45
  5. Step 5: Solve for x
    x = 35,591,579.45/8,378.56
  6. Step 6: Final answer
    x = 4,247.94

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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.