Home / 3,529.80-4,872.78-2,205.45

Finding the Fourth Proportional to 3,529.80, 4,872.78 and 2,205.45

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Solution

The fourth proportional to 3,529.80, 4,872.78 and 2,205.45 is: 3,044.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,529.80 : 4,872.78 = 2,205.45 : x
  2. Step 2: Convert to fraction form
    3,529.80/4,872.78 = 2,205.45/x
  3. Step 3: Cross multiply
    3,529.80x = 4,872.78 × 2,205.45
  4. Step 4: Simplify right side
    3,529.80x = 10,746,672.65
  5. Step 5: Solve for x
    x = 10,746,672.65/3,529.80
  6. Step 6: Final answer
    x = 3,044.56

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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.