Home / 2,051.96-3,078.95-1,271.75

Finding the Fourth Proportional to 2,051.96, 3,078.95 and 1,271.75

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Solution

The fourth proportional to 2,051.96, 3,078.95 and 1,271.75 is: 1,908.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,051.96 : 3,078.95 = 1,271.75 : x
  2. Step 2: Convert to fraction form
    2,051.96/3,078.95 = 1,271.75/x
  3. Step 3: Cross multiply
    2,051.96x = 3,078.95 × 1,271.75
  4. Step 4: Simplify right side
    2,051.96x = 3,915,632.91
  5. Step 5: Solve for x
    x = 3,915,632.91/2,051.96
  6. Step 6: Final answer
    x = 1,908.25

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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.