Home / 3,071.48-4,238.58-1,892.12

Finding the Fourth Proportional to 3,071.48, 4,238.58 and 1,892.12

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Solution

The fourth proportional to 3,071.48, 4,238.58 and 1,892.12 is: 2,611.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,071.48 : 4,238.58 = 1,892.12 : x
  2. Step 2: Convert to fraction form
    3,071.48/4,238.58 = 1,892.12/x
  3. Step 3: Cross multiply
    3,071.48x = 4,238.58 × 1,892.12
  4. Step 4: Simplify right side
    3,071.48x = 8,019,901.99
  5. Step 5: Solve for x
    x = 8,019,901.99/3,071.48
  6. Step 6: Final answer
    x = 2,611.09

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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.