Home / 5,485.61-8,229.36-1,786.79

Finding the Fourth Proportional to 5,485.61, 8,229.36 and 1,786.79

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Solution

The fourth proportional to 5,485.61, 8,229.36 and 1,786.79 is: 2,680.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,485.61 : 8,229.36 = 1,786.79 : x
  2. Step 2: Convert to fraction form
    5,485.61/8,229.36 = 1,786.79/x
  3. Step 3: Cross multiply
    5,485.61x = 8,229.36 × 1,786.79
  4. Step 4: Simplify right side
    5,485.61x = 14,704,138.15
  5. Step 5: Solve for x
    x = 14,704,138.15/5,485.61
  6. Step 6: Final answer
    x = 2,680.49

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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.