Home / 3,853.19-5,317.40-2,084.80

Finding the Fourth Proportional to 3,853.19, 5,317.40 and 2,084.80

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Solution

The fourth proportional to 3,853.19, 5,317.40 and 2,084.80 is: 2,877.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,853.19 : 5,317.40 = 2,084.80 : x
  2. Step 2: Convert to fraction form
    3,853.19/5,317.40 = 2,084.80/x
  3. Step 3: Cross multiply
    3,853.19x = 5,317.40 × 2,084.80
  4. Step 4: Simplify right side
    3,853.19x = 11,085,707.44
  5. Step 5: Solve for x
    x = 11,085,707.44/3,853.19
  6. Step 6: Final answer
    x = 2,877.02

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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.