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Finding the Fourth Proportional to 2,205.10, 3,308.13 and 744.21

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Solution

The fourth proportional to 2,205.10, 3,308.13 and 744.21 is: 1,116.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,205.10 : 3,308.13 = 744.21 : x
  2. Step 2: Convert to fraction form
    2,205.10/3,308.13 = 744.21/x
  3. Step 3: Cross multiply
    2,205.10x = 3,308.13 × 744.21
  4. Step 4: Simplify right side
    2,205.10x = 2,461,923.17
  5. Step 5: Solve for x
    x = 2,461,923.17/2,205.10
  6. Step 6: Final answer
    x = 1,116.47

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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.