Home / 2,811.09-3,878.65-1,632.21

Finding the Fourth Proportional to 2,811.09, 3,878.65 and 1,632.21

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Solution

The fourth proportional to 2,811.09, 3,878.65 and 1,632.21 is: 2,252.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,811.09 : 3,878.65 = 1,632.21 : x
  2. Step 2: Convert to fraction form
    2,811.09/3,878.65 = 1,632.21/x
  3. Step 3: Cross multiply
    2,811.09x = 3,878.65 × 1,632.21
  4. Step 4: Simplify right side
    2,811.09x = 6,330,771.32
  5. Step 5: Solve for x
    x = 6,330,771.32/2,811.09
  6. Step 6: Final answer
    x = 2,252.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.