Home / 4,947.21-6,831.74-3,181.88

Finding the Fourth Proportional to 4,947.21, 6,831.74 and 3,181.88

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Solution

The fourth proportional to 4,947.21, 6,831.74 and 3,181.88 is: 4,393.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,947.21 : 6,831.74 = 3,181.88 : x
  2. Step 2: Convert to fraction form
    4,947.21/6,831.74 = 3,181.88/x
  3. Step 3: Cross multiply
    4,947.21x = 6,831.74 × 3,181.88
  4. Step 4: Simplify right side
    4,947.21x = 21,737,801.91
  5. Step 5: Solve for x
    x = 21,737,801.91/4,947.21
  6. Step 6: Final answer
    x = 4,393.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.