Home / 2,811.81-3,880.77-1,633.56

Finding the Fourth Proportional to 2,811.81, 3,880.77 and 1,633.56

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Solution

The fourth proportional to 2,811.81, 3,880.77 and 1,633.56 is: 2,254.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,811.81 : 3,880.77 = 1,633.56 : x
  2. Step 2: Convert to fraction form
    2,811.81/3,880.77 = 1,633.56/x
  3. Step 3: Cross multiply
    2,811.81x = 3,880.77 × 1,633.56
  4. Step 4: Simplify right side
    2,811.81x = 6,339,476.39
  5. Step 5: Solve for x
    x = 6,339,476.39/2,811.81
  6. Step 6: Final answer
    x = 2,254.59

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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.