Home / 3,220.50-4,443.79-1,803.81

Finding the Fourth Proportional to 3,220.50, 4,443.79 and 1,803.81

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Solution

The fourth proportional to 3,220.50, 4,443.79 and 1,803.81 is: 2,488.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,220.50 : 4,443.79 = 1,803.81 : x
  2. Step 2: Convert to fraction form
    3,220.50/4,443.79 = 1,803.81/x
  3. Step 3: Cross multiply
    3,220.50x = 4,443.79 × 1,803.81
  4. Step 4: Simplify right side
    3,220.50x = 8,015,752.84
  5. Step 5: Solve for x
    x = 8,015,752.84/3,220.50
  6. Step 6: Final answer
    x = 2,488.98

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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.