Home / 3,538.12-4,881.62-2,120.92

Finding the Fourth Proportional to 3,538.12, 4,881.62 and 2,120.92

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Solution

The fourth proportional to 3,538.12, 4,881.62 and 2,120.92 is: 2,926.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,538.12 : 4,881.62 = 2,120.92 : x
  2. Step 2: Convert to fraction form
    3,538.12/4,881.62 = 2,120.92/x
  3. Step 3: Cross multiply
    3,538.12x = 4,881.62 × 2,120.92
  4. Step 4: Simplify right side
    3,538.12x = 10,353,525.49
  5. Step 5: Solve for x
    x = 10,353,525.49/3,538.12
  6. Step 6: Final answer
    x = 2,926.28

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Double 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.