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Finding the Fourth Proportional to 3,300.40, 4,950.42 and 1,108.90

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Solution

The fourth proportional to 3,300.40, 4,950.42 and 1,108.90 is: 1,663.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,300.40 : 4,950.42 = 1,108.90 : x
  2. Step 2: Convert to fraction form
    3,300.40/4,950.42 = 1,108.90/x
  3. Step 3: Cross multiply
    3,300.40x = 4,950.42 × 1,108.90
  4. Step 4: Simplify right side
    3,300.40x = 5,489,520.74
  5. Step 5: Solve for x
    x = 5,489,520.74/3,300.40
  6. Step 6: Final answer
    x = 1,663.29

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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.