Home / 3,285.90-4,929.45-1,338.30

Finding the Fourth Proportional to 3,285.90, 4,929.45 and 1,338.30

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Solution

The fourth proportional to 3,285.90, 4,929.45 and 1,338.30 is: 2,007.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,285.90 : 4,929.45 = 1,338.30 : x
  2. Step 2: Convert to fraction form
    3,285.90/4,929.45 = 1,338.30/x
  3. Step 3: Cross multiply
    3,285.90x = 4,929.45 × 1,338.30
  4. Step 4: Simplify right side
    3,285.90x = 6,597,082.94
  5. Step 5: Solve for x
    x = 6,597,082.94/3,285.90
  6. Step 6: Final answer
    x = 2,007.69

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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.