Home / 3,657.20-5,485.78-1,465.90

Finding the Fourth Proportional to 3,657.20, 5,485.78 and 1,465.90

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Solution

The fourth proportional to 3,657.20, 5,485.78 and 1,465.90 is: 2,198.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,657.20 : 5,485.78 = 1,465.90 : x
  2. Step 2: Convert to fraction form
    3,657.20/5,485.78 = 1,465.90/x
  3. Step 3: Cross multiply
    3,657.20x = 5,485.78 × 1,465.90
  4. Step 4: Simplify right side
    3,657.20x = 8,041,584.77
  5. Step 5: Solve for x
    x = 8,041,584.77/3,657.20
  6. Step 6: Final answer
    x = 2,198.84

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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.