Home / 3,285.50-4,925.82-1,986.68

Finding the Fourth Proportional to 3,285.50, 4,925.82 and 1,986.68

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Solution

The fourth proportional to 3,285.50, 4,925.82 and 1,986.68 is: 2,978.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,285.50 : 4,925.82 = 1,986.68 : x
  2. Step 2: Convert to fraction form
    3,285.50/4,925.82 = 1,986.68/x
  3. Step 3: Cross multiply
    3,285.50x = 4,925.82 × 1,986.68
  4. Step 4: Simplify right side
    3,285.50x = 9,786,028.08
  5. Step 5: Solve for x
    x = 9,786,028.08/3,285.50
  6. Step 6: Final answer
    x = 2,978.55

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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.