Home / 3,928.08-5,416.96-2,581.28

Finding the Fourth Proportional to 3,928.08, 5,416.96 and 2,581.28

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Solution

The fourth proportional to 3,928.08, 5,416.96 and 2,581.28 is: 3,559.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,928.08 : 5,416.96 = 2,581.28 : x
  2. Step 2: Convert to fraction form
    3,928.08/5,416.96 = 2,581.28/x
  3. Step 3: Cross multiply
    3,928.08x = 5,416.96 × 2,581.28
  4. Step 4: Simplify right side
    3,928.08x = 13,982,690.51
  5. Step 5: Solve for x
    x = 13,982,690.51/3,928.08
  6. Step 6: Final answer
    x = 3,559.68

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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.