Home / 8,106.12-12,162.06-3,947.40

Finding the Fourth Proportional to 8,106.12, 12,162.06 and 3,947.40

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Solution

The fourth proportional to 8,106.12, 12,162.06 and 3,947.40 is: 5,922.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,106.12 : 12,162.06 = 3,947.40 : x
  2. Step 2: Convert to fraction form
    8,106.12/12,162.06 = 3,947.40/x
  3. Step 3: Cross multiply
    8,106.12x = 12,162.06 × 3,947.40
  4. Step 4: Simplify right side
    8,106.12x = 48,008,515.64
  5. Step 5: Solve for x
    x = 48,008,515.64/8,106.12
  6. Step 6: Final answer
    x = 5,922.50

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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.