Home / 2,107.34-2,909.12-1,222.97

Finding the Fourth Proportional to 2,107.34, 2,909.12 and 1,222.97

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Solution

The fourth proportional to 2,107.34, 2,909.12 and 1,222.97 is: 1,688.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,107.34 : 2,909.12 = 1,222.97 : x
  2. Step 2: Convert to fraction form
    2,107.34/2,909.12 = 1,222.97/x
  3. Step 3: Cross multiply
    2,107.34x = 2,909.12 × 1,222.97
  4. Step 4: Simplify right side
    2,107.34x = 3,557,760.37
  5. Step 5: Solve for x
    x = 3,557,760.37/2,107.34
  6. Step 6: Final answer
    x = 1,688.27

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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.