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Finding the Fourth Proportional to 3,393.96, 4,683.60 and 2,212.80

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Solution

The fourth proportional to 3,393.96, 4,683.60 and 2,212.80 is: 3,053.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,393.96 : 4,683.60 = 2,212.80 : x
  2. Step 2: Convert to fraction form
    3,393.96/4,683.60 = 2,212.80/x
  3. Step 3: Cross multiply
    3,393.96x = 4,683.60 × 2,212.80
  4. Step 4: Simplify right side
    3,393.96x = 10,363,870.08
  5. Step 5: Solve for x
    x = 10,363,870.08/3,393.96
  6. Step 6: Final answer
    x = 3,053.62

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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.