Home / 5,409.58-8,115.20-2,289.60

Finding the Fourth Proportional to 5,409.58, 8,115.20 and 2,289.60

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Solution

The fourth proportional to 5,409.58, 8,115.20 and 2,289.60 is: 3,434.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,409.58 : 8,115.20 = 2,289.60 : x
  2. Step 2: Convert to fraction form
    5,409.58/8,115.20 = 2,289.60/x
  3. Step 3: Cross multiply
    5,409.58x = 8,115.20 × 2,289.60
  4. Step 4: Simplify right side
    5,409.58x = 18,580,561.92
  5. Step 5: Solve for x
    x = 18,580,561.92/5,409.58
  6. Step 6: Final answer
    x = 3,434.75

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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.