Home / 3,801.78-5,705.40-1,611.12

Finding the Fourth Proportional to 3,801.78, 5,705.40 and 1,611.12

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Solution

The fourth proportional to 3,801.78, 5,705.40 and 1,611.12 is: 2,417.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,801.78 : 5,705.40 = 1,611.12 : x
  2. Step 2: Convert to fraction form
    3,801.78/5,705.40 = 1,611.12/x
  3. Step 3: Cross multiply
    3,801.78x = 5,705.40 × 1,611.12
  4. Step 4: Simplify right side
    3,801.78x = 9,192,084.05
  5. Step 5: Solve for x
    x = 9,192,084.05/3,801.78
  6. Step 6: Final answer
    x = 2,417.84

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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.