Home / 1,941.84-2,912.79-480.99

Finding the Fourth Proportional to 1,941.84, 2,912.79 and 480.99

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Solution

The fourth proportional to 1,941.84, 2,912.79 and 480.99 is: 721.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,941.84 : 2,912.79 = 480.99 : x
  2. Step 2: Convert to fraction form
    1,941.84/2,912.79 = 480.99/x
  3. Step 3: Cross multiply
    1,941.84x = 2,912.79 × 480.99
  4. Step 4: Simplify right side
    1,941.84x = 1,401,021.29
  5. Step 5: Solve for x
    x = 1,401,021.29/1,941.84
  6. Step 6: Final answer
    x = 721.49

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Double scale
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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.