Home / 2,105.10-2,904.95-1,208.22

Finding the Fourth Proportional to 2,105.10, 2,904.95 and 1,208.22

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Solution

The fourth proportional to 2,105.10, 2,904.95 and 1,208.22 is: 1,667.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,105.10 : 2,904.95 = 1,208.22 : x
  2. Step 2: Convert to fraction form
    2,105.10/2,904.95 = 1,208.22/x
  3. Step 3: Cross multiply
    2,105.10x = 2,904.95 × 1,208.22
  4. Step 4: Simplify right side
    2,105.10x = 3,509,812.65
  5. Step 5: Solve for x
    x = 3,509,812.65/2,105.10
  6. Step 6: Final answer
    x = 1,667.29

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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.