Home / 1,857.03-2,784.26-1,238.90

Finding the Fourth Proportional to 1,857.03, 2,784.26 and 1,238.90

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Solution

The fourth proportional to 1,857.03, 2,784.26 and 1,238.90 is: 1,857.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,857.03 : 2,784.26 = 1,238.90 : x
  2. Step 2: Convert to fraction form
    1,857.03/2,784.26 = 1,238.90/x
  3. Step 3: Cross multiply
    1,857.03x = 2,784.26 × 1,238.90
  4. Step 4: Simplify right side
    1,857.03x = 3,449,399.60
  5. Step 5: Solve for x
    x = 3,449,399.60/1,857.03
  6. Step 6: Final answer
    x = 1,857.48

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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.