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Finding the Fourth Proportional to 3,493.85, 4,821.49 and 1,900.45

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Solution

The fourth proportional to 3,493.85, 4,821.49 and 1,900.45 is: 2,622.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,493.85 : 4,821.49 = 1,900.45 : x
  2. Step 2: Convert to fraction form
    3,493.85/4,821.49 = 1,900.45/x
  3. Step 3: Cross multiply
    3,493.85x = 4,821.49 × 1,900.45
  4. Step 4: Simplify right side
    3,493.85x = 9,163,000.67
  5. Step 5: Solve for x
    x = 9,163,000.67/3,493.85
  6. Step 6: Final answer
    x = 2,622.61

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1.5x scale

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.