Home / 1,981.49-2,975.37-1,910.75

Finding the Fourth Proportional to 1,981.49, 2,975.37 and 1,910.75

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Solution

The fourth proportional to 1,981.49, 2,975.37 and 1,910.75 is: 2,869.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,981.49 : 2,975.37 = 1,910.75 : x
  2. Step 2: Convert to fraction form
    1,981.49/2,975.37 = 1,910.75/x
  3. Step 3: Cross multiply
    1,981.49x = 2,975.37 × 1,910.75
  4. Step 4: Simplify right side
    1,981.49x = 5,685,188.23
  5. Step 5: Solve for x
    x = 5,685,188.23/1,981.49
  6. Step 6: Final answer
    x = 2,869.15

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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.