Home / 3,853.77-5,318.19-2,085.37

Finding the Fourth Proportional to 3,853.77, 5,318.19 and 2,085.37

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Solution

The fourth proportional to 3,853.77, 5,318.19 and 2,085.37 is: 2,877.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,853.77 : 5,318.19 = 2,085.37 : x
  2. Step 2: Convert to fraction form
    3,853.77/5,318.19 = 2,085.37/x
  3. Step 3: Cross multiply
    3,853.77x = 5,318.19 × 2,085.37
  4. Step 4: Simplify right side
    3,853.77x = 11,090,393.88
  5. Step 5: Solve for x
    x = 11,090,393.88/3,853.77
  6. Step 6: Final answer
    x = 2,877.80

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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.