Home / 3,538.26-4,880.38-2,120.96

Finding the Fourth Proportional to 3,538.26, 4,880.38 and 2,120.96

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Solution

The fourth proportional to 3,538.26, 4,880.38 and 2,120.96 is: 2,925.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,538.26 : 4,880.38 = 2,120.96 : x
  2. Step 2: Convert to fraction form
    3,538.26/4,880.38 = 2,120.96/x
  3. Step 3: Cross multiply
    3,538.26x = 4,880.38 × 2,120.96
  4. Step 4: Simplify right side
    3,538.26x = 10,351,090.76
  5. Step 5: Solve for x
    x = 10,351,090.76/3,538.26
  6. Step 6: Final answer
    x = 2,925.47

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Half scale
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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.