Home / 8,378.88-12,570.12-2,831.95

Finding the Fourth Proportional to 8,378.88, 12,570.12 and 2,831.95

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Solution

The fourth proportional to 8,378.88, 12,570.12 and 2,831.95 is: 4,248.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,378.88 : 12,570.12 = 2,831.95 : x
  2. Step 2: Convert to fraction form
    8,378.88/12,570.12 = 2,831.95/x
  3. Step 3: Cross multiply
    8,378.88x = 12,570.12 × 2,831.95
  4. Step 4: Simplify right side
    8,378.88x = 35,597,951.33
  5. Step 5: Solve for x
    x = 35,597,951.33/8,378.88
  6. Step 6: Final answer
    x = 4,248.53

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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.