Home / 3,811.68-5,260.21-2,133.07

Finding the Fourth Proportional to 3,811.68, 5,260.21 and 2,133.07

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Solution

The fourth proportional to 3,811.68, 5,260.21 and 2,133.07 is: 2,943.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,811.68 : 5,260.21 = 2,133.07 : x
  2. Step 2: Convert to fraction form
    3,811.68/5,260.21 = 2,133.07/x
  3. Step 3: Cross multiply
    3,811.68x = 5,260.21 × 2,133.07
  4. Step 4: Simplify right side
    3,811.68x = 11,220,377.66
  5. Step 5: Solve for x
    x = 11,220,377.66/3,811.68
  6. Step 6: Final answer
    x = 2,943.68

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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.