Home / 5,435.87-8,155.43-3,125.75

Finding the Fourth Proportional to 5,435.87, 8,155.43 and 3,125.75

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Solution

The fourth proportional to 5,435.87, 8,155.43 and 3,125.75 is: 4,689.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,435.87 : 8,155.43 = 3,125.75 : x
  2. Step 2: Convert to fraction form
    5,435.87/8,155.43 = 3,125.75/x
  3. Step 3: Cross multiply
    5,435.87x = 8,155.43 × 3,125.75
  4. Step 4: Simplify right side
    5,435.87x = 25,491,835.32
  5. Step 5: Solve for x
    x = 25,491,835.32/5,435.87
  6. Step 6: Final answer
    x = 4,689.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.