Home / 3,921.92-5,412.16-2,328.32

Finding the Fourth Proportional to 3,921.92, 5,412.16 and 2,328.32

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Solution

The fourth proportional to 3,921.92, 5,412.16 and 2,328.32 is: 3,213.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,921.92 : 5,412.16 = 2,328.32 : x
  2. Step 2: Convert to fraction form
    3,921.92/5,412.16 = 2,328.32/x
  3. Step 3: Cross multiply
    3,921.92x = 5,412.16 × 2,328.32
  4. Step 4: Simplify right side
    3,921.92x = 12,601,240.37
  5. Step 5: Solve for x
    x = 12,601,240.37/3,921.92
  6. Step 6: Final answer
    x = 3,213.03

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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.