Home / 4,189.75-6,280.23-1,415.45

Finding the Fourth Proportional to 4,189.75, 6,280.23 and 1,415.45

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Solution

The fourth proportional to 4,189.75, 6,280.23 and 1,415.45 is: 2,121.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,189.75 : 6,280.23 = 1,415.45 : x
  2. Step 2: Convert to fraction form
    4,189.75/6,280.23 = 1,415.45/x
  3. Step 3: Cross multiply
    4,189.75x = 6,280.23 × 1,415.45
  4. Step 4: Simplify right side
    4,189.75x = 8,889,351.55
  5. Step 5: Solve for x
    x = 8,889,351.55/4,189.75
  6. Step 6: Final answer
    x = 2,121.69

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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.