Home / 5,439.20-8,163.60-4,661.60

Finding the Fourth Proportional to 5,439.20, 8,163.60 and 4,661.60

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Solution

The fourth proportional to 5,439.20, 8,163.60 and 4,661.60 is: 6,996.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,439.20 : 8,163.60 = 4,661.60 : x
  2. Step 2: Convert to fraction form
    5,439.20/8,163.60 = 4,661.60/x
  3. Step 3: Cross multiply
    5,439.20x = 8,163.60 × 4,661.60
  4. Step 4: Simplify right side
    5,439.20x = 38,055,437.76
  5. Step 5: Solve for x
    x = 38,055,437.76/5,439.20
  6. Step 6: Final answer
    x = 6,996.51

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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.