Home / 4,091.95-6,138.87-1,280.63

Finding the Fourth Proportional to 4,091.95, 6,138.87 and 1,280.63

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Solution

The fourth proportional to 4,091.95, 6,138.87 and 1,280.63 is: 1,921.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,091.95 : 6,138.87 = 1,280.63 : x
  2. Step 2: Convert to fraction form
    4,091.95/6,138.87 = 1,280.63/x
  3. Step 3: Cross multiply
    4,091.95x = 6,138.87 × 1,280.63
  4. Step 4: Simplify right side
    4,091.95x = 7,861,604.31
  5. Step 5: Solve for x
    x = 7,861,604.31/4,091.95
  6. Step 6: Final answer
    x = 1,921.24

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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.