Home / 3,300.80-4,555.32-1,808.78

Finding the Fourth Proportional to 3,300.80, 4,555.32 and 1,808.78

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Solution

The fourth proportional to 3,300.80, 4,555.32 and 1,808.78 is: 2,496.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,300.80 : 4,555.32 = 1,808.78 : x
  2. Step 2: Convert to fraction form
    3,300.80/4,555.32 = 1,808.78/x
  3. Step 3: Cross multiply
    3,300.80x = 4,555.32 × 1,808.78
  4. Step 4: Simplify right side
    3,300.80x = 8,239,571.71
  5. Step 5: Solve for x
    x = 8,239,571.71/3,300.80
  6. Step 6: Final answer
    x = 2,496.23

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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.