Home / 3,220.30-4,443.76-1,803.87

Finding the Fourth Proportional to 3,220.30, 4,443.76 and 1,803.87

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Solution

The fourth proportional to 3,220.30, 4,443.76 and 1,803.87 is: 2,489.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,220.30 : 4,443.76 = 1,803.87 : x
  2. Step 2: Convert to fraction form
    3,220.30/4,443.76 = 1,803.87/x
  3. Step 3: Cross multiply
    3,220.30x = 4,443.76 × 1,803.87
  4. Step 4: Simplify right side
    3,220.30x = 8,015,969.96
  5. Step 5: Solve for x
    x = 8,015,969.96/3,220.30
  6. Step 6: Final answer
    x = 2,489.20

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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.