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Finding the Fourth Proportional to 3,630, 5,445 and 894

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Solution

The fourth proportional to 3,630, 5,445 and 894 is: 1,341

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,630 : 5,445 = 894 : x
  2. Step 2: Convert to fraction form
    3,630/5,445 = 894/x
  3. Step 3: Cross multiply
    3,630x = 5,445 × 894
  4. Step 4: Simplify right side
    3,630x = 4,867,830
  5. Step 5: Solve for x
    x = 4,867,830/3,630
  6. Step 6: Final answer
    x = 1,341

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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.