Home / 2,111.84-2,914.08-1,227.84

Finding the Fourth Proportional to 2,111.84, 2,914.08 and 1,227.84

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Solution

The fourth proportional to 2,111.84, 2,914.08 and 1,227.84 is: 1,694.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,111.84 : 2,914.08 = 1,227.84 : x
  2. Step 2: Convert to fraction form
    2,111.84/2,914.08 = 1,227.84/x
  3. Step 3: Cross multiply
    2,111.84x = 2,914.08 × 1,227.84
  4. Step 4: Simplify right side
    2,111.84x = 3,578,023.99
  5. Step 5: Solve for x
    x = 3,578,023.99/2,111.84
  6. Step 6: Final answer
    x = 1,694.27

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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.