Home / 2,107.17-2,908.05-1,223.49

Finding the Fourth Proportional to 2,107.17, 2,908.05 and 1,223.49

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Solution

The fourth proportional to 2,107.17, 2,908.05 and 1,223.49 is: 1,688.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,107.17 : 2,908.05 = 1,223.49 : x
  2. Step 2: Convert to fraction form
    2,107.17/2,908.05 = 1,223.49/x
  3. Step 3: Cross multiply
    2,107.17x = 2,908.05 × 1,223.49
  4. Step 4: Simplify right side
    2,107.17x = 3,557,970.09
  5. Step 5: Solve for x
    x = 3,557,970.09/2,107.17
  6. Step 6: Final answer
    x = 1,688.51

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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.