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Finding the Fourth Proportional to 3,605.45, 4,975.50 and 1,949.45

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Solution

The fourth proportional to 3,605.45, 4,975.50 and 1,949.45 is: 2,690.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,605.45 : 4,975.50 = 1,949.45 : x
  2. Step 2: Convert to fraction form
    3,605.45/4,975.50 = 1,949.45/x
  3. Step 3: Cross multiply
    3,605.45x = 4,975.50 × 1,949.45
  4. Step 4: Simplify right side
    3,605.45x = 9,699,463.60
  5. Step 5: Solve for x
    x = 9,699,463.60/3,605.45
  6. Step 6: Final answer
    x = 2,690.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.