Home / 3,285.90-4,928.99-1,643.49

Finding the Fourth Proportional to 3,285.90, 4,928.99 and 1,643.49

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Solution

The fourth proportional to 3,285.90, 4,928.99 and 1,643.49 is: 2,465.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,285.90 : 4,928.99 = 1,643.49 : x
  2. Step 2: Convert to fraction form
    3,285.90/4,928.99 = 1,643.49/x
  3. Step 3: Cross multiply
    3,285.90x = 4,928.99 × 1,643.49
  4. Step 4: Simplify right side
    3,285.90x = 8,100,737.56
  5. Step 5: Solve for x
    x = 8,100,737.56/3,285.90
  6. Step 6: Final answer
    x = 2,465.30

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1.5x scale

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.