Home / 2,325.12-3,212.16-2,128.56

Finding the Fourth Proportional to 2,325.12, 3,212.16 and 2,128.56

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Solution

The fourth proportional to 2,325.12, 3,212.16 and 2,128.56 is: 2,940.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,325.12 : 3,212.16 = 2,128.56 : x
  2. Step 2: Convert to fraction form
    2,325.12/3,212.16 = 2,128.56/x
  3. Step 3: Cross multiply
    2,325.12x = 3,212.16 × 2,128.56
  4. Step 4: Simplify right side
    2,325.12x = 6,837,275.29
  5. Step 5: Solve for x
    x = 6,837,275.29/2,325.12
  6. Step 6: Final answer
    x = 2,940.61

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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.