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Finding the Fourth Proportional to 2,245.80, 3,369.90 and 1,013.40

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Solution

The fourth proportional to 2,245.80, 3,369.90 and 1,013.40 is: 1,520.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,245.80 : 3,369.90 = 1,013.40 : x
  2. Step 2: Convert to fraction form
    2,245.80/3,369.90 = 1,013.40/x
  3. Step 3: Cross multiply
    2,245.80x = 3,369.90 × 1,013.40
  4. Step 4: Simplify right side
    2,245.80x = 3,415,056.66
  5. Step 5: Solve for x
    x = 3,415,056.66/2,245.80
  6. Step 6: Final answer
    x = 1,520.64

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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.