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Finding the Fourth Proportional to 2,622.40, 3,933.60 and 674.59

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Solution

The fourth proportional to 2,622.40, 3,933.60 and 674.59 is: 1,011.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,622.40 : 3,933.60 = 674.59 : x
  2. Step 2: Convert to fraction form
    2,622.40/3,933.60 = 674.59/x
  3. Step 3: Cross multiply
    2,622.40x = 3,933.60 × 674.59
  4. Step 4: Simplify right side
    2,622.40x = 2,653,567.22
  5. Step 5: Solve for x
    x = 2,653,567.22/2,622.40
  6. Step 6: Final answer
    x = 1,011.89

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Similar ratio
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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.