Home / 3,811.96-5,260.80-2,133.50

Finding the Fourth Proportional to 3,811.96, 5,260.80 and 2,133.50

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Solution

The fourth proportional to 3,811.96, 5,260.80 and 2,133.50 is: 2,944.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,811.96 : 5,260.80 = 2,133.50 : x
  2. Step 2: Convert to fraction form
    3,811.96/5,260.80 = 2,133.50/x
  3. Step 3: Cross multiply
    3,811.96x = 5,260.80 × 2,133.50
  4. Step 4: Simplify right side
    3,811.96x = 11,223,916.80
  5. Step 5: Solve for x
    x = 11,223,916.80/3,811.96
  6. Step 6: Final answer
    x = 2,944.40

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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.