Home / 3,938.61-5,904.99-1,857.44

Finding the Fourth Proportional to 3,938.61, 5,904.99 and 1,857.44

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Solution

The fourth proportional to 3,938.61, 5,904.99 and 1,857.44 is: 2,784.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,938.61 : 5,904.99 = 1,857.44 : x
  2. Step 2: Convert to fraction form
    3,938.61/5,904.99 = 1,857.44/x
  3. Step 3: Cross multiply
    3,938.61x = 5,904.99 × 1,857.44
  4. Step 4: Simplify right side
    3,938.61x = 10,968,135.10
  5. Step 5: Solve for x
    x = 10,968,135.10/3,938.61
  6. Step 6: Final answer
    x = 2,784.77

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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.