Home / 3,205.42-4,813.62-1,980.07

Finding the Fourth Proportional to 3,205.42, 4,813.62 and 1,980.07

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Solution

The fourth proportional to 3,205.42, 4,813.62 and 1,980.07 is: 2,973.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,205.42 : 4,813.62 = 1,980.07 : x
  2. Step 2: Convert to fraction form
    3,205.42/4,813.62 = 1,980.07/x
  3. Step 3: Cross multiply
    3,205.42x = 4,813.62 × 1,980.07
  4. Step 4: Simplify right side
    3,205.42x = 9,531,304.55
  5. Step 5: Solve for x
    x = 9,531,304.55/3,205.42
  6. Step 6: Final answer
    x = 2,973.50

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.