Home / 3,131.05-4,696.68-1,486.75

Finding the Fourth Proportional to 3,131.05, 4,696.68 and 1,486.75

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Solution

The fourth proportional to 3,131.05, 4,696.68 and 1,486.75 is: 2,230.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,131.05 : 4,696.68 = 1,486.75 : x
  2. Step 2: Convert to fraction form
    3,131.05/4,696.68 = 1,486.75/x
  3. Step 3: Cross multiply
    3,131.05x = 4,696.68 × 1,486.75
  4. Step 4: Simplify right side
    3,131.05x = 6,982,788.99
  5. Step 5: Solve for x
    x = 6,982,788.99/3,131.05
  6. Step 6: Final answer
    x = 2,230.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.