Home / 3,928.32-5,422.68-2,435.76

Finding the Fourth Proportional to 3,928.32, 5,422.68 and 2,435.76

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Solution

The fourth proportional to 3,928.32, 5,422.68 and 2,435.76 is: 3,362.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,928.32 : 5,422.68 = 2,435.76 : x
  2. Step 2: Convert to fraction form
    3,928.32/5,422.68 = 2,435.76/x
  3. Step 3: Cross multiply
    3,928.32x = 5,422.68 × 2,435.76
  4. Step 4: Simplify right side
    3,928.32x = 13,208,347.04
  5. Step 5: Solve for x
    x = 13,208,347.04/3,928.32
  6. Step 6: Final answer
    x = 3,362.34

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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.