Home / 8,106.20-12,149.70-4,208.60

Finding the Fourth Proportional to 8,106.20, 12,149.70 and 4,208.60

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Solution

The fourth proportional to 8,106.20, 12,149.70 and 4,208.60 is: 6,307.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,106.20 : 12,149.70 = 4,208.60 : x
  2. Step 2: Convert to fraction form
    8,106.20/12,149.70 = 4,208.60/x
  3. Step 3: Cross multiply
    8,106.20x = 12,149.70 × 4,208.60
  4. Step 4: Simplify right side
    8,106.20x = 51,133,227.42
  5. Step 5: Solve for x
    x = 51,133,227.42/8,106.20
  6. Step 6: Final answer
    x = 6,307.92

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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.