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Finding the Fourth Proportional to 2,103.69, 3,154.80 and 622.50

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Solution

The fourth proportional to 2,103.69, 3,154.80 and 622.50 is: 933.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,103.69 : 3,154.80 = 622.50 : x
  2. Step 2: Convert to fraction form
    2,103.69/3,154.80 = 622.50/x
  3. Step 3: Cross multiply
    2,103.69x = 3,154.80 × 622.50
  4. Step 4: Simplify right side
    2,103.69x = 1,963,863
  5. Step 5: Solve for x
    x = 1,963,863/2,103.69
  6. Step 6: Final answer
    x = 933.53

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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.