Home / 7,864.20-11,783.70-4,161.60

Finding the Fourth Proportional to 7,864.20, 11,783.70 and 4,161.60

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Solution

The fourth proportional to 7,864.20, 11,783.70 and 4,161.60 is: 6,235.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,864.20 : 11,783.70 = 4,161.60 : x
  2. Step 2: Convert to fraction form
    7,864.20/11,783.70 = 4,161.60/x
  3. Step 3: Cross multiply
    7,864.20x = 11,783.70 × 4,161.60
  4. Step 4: Simplify right side
    7,864.20x = 49,039,045.92
  5. Step 5: Solve for x
    x = 49,039,045.92/7,864.20
  6. Step 6: Final answer
    x = 6,235.73

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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.