Home / 3,208.75-4,428.18-1,811.50

Finding the Fourth Proportional to 3,208.75, 4,428.18 and 1,811.50

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Solution

The fourth proportional to 3,208.75, 4,428.18 and 1,811.50 is: 2,499.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,208.75 : 4,428.18 = 1,811.50 : x
  2. Step 2: Convert to fraction form
    3,208.75/4,428.18 = 1,811.50/x
  3. Step 3: Cross multiply
    3,208.75x = 4,428.18 × 1,811.50
  4. Step 4: Simplify right side
    3,208.75x = 8,021,648.07
  5. Step 5: Solve for x
    x = 8,021,648.07/3,208.75
  6. Step 6: Final answer
    x = 2,499.93

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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.