Home / 3,928.61-5,420.14-2,435.99

Finding the Fourth Proportional to 3,928.61, 5,420.14 and 2,435.99

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Solution

The fourth proportional to 3,928.61, 5,420.14 and 2,435.99 is: 3,360.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,928.61 : 5,420.14 = 2,435.99 : x
  2. Step 2: Convert to fraction form
    3,928.61/5,420.14 = 2,435.99/x
  3. Step 3: Cross multiply
    3,928.61x = 5,420.14 × 2,435.99
  4. Step 4: Simplify right side
    3,928.61x = 13,203,411.25
  5. Step 5: Solve for x
    x = 13,203,411.25/3,928.61
  6. Step 6: Final answer
    x = 3,360.83

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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.