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Finding the Fourth Proportional to 4,843.60, 6,685.60 and 2,854.80

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Solution

The fourth proportional to 4,843.60, 6,685.60 and 2,854.80 is: 3,940.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,843.60 : 6,685.60 = 2,854.80 : x
  2. Step 2: Convert to fraction form
    4,843.60/6,685.60 = 2,854.80/x
  3. Step 3: Cross multiply
    4,843.60x = 6,685.60 × 2,854.80
  4. Step 4: Simplify right side
    4,843.60x = 19,086,017.45
  5. Step 5: Solve for x
    x = 19,086,017.45/4,843.60
  6. Step 6: Final answer
    x = 3,940.47

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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.