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Finding the Fourth Proportional to 5,555.80, 8,321.55 and 4,826.80

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Solution

The fourth proportional to 5,555.80, 8,321.55 and 4,826.80 is: 7,229.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,555.80 : 8,321.55 = 4,826.80 : x
  2. Step 2: Convert to fraction form
    5,555.80/8,321.55 = 4,826.80/x
  3. Step 3: Cross multiply
    5,555.80x = 8,321.55 × 4,826.80
  4. Step 4: Simplify right side
    5,555.80x = 40,166,457.54
  5. Step 5: Solve for x
    x = 40,166,457.54/5,555.80
  6. Step 6: Final answer
    x = 7,229.64

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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.