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Finding the Fourth Proportional to 3,185.57, 4,395.88 and 1,769.15

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Solution

The fourth proportional to 3,185.57, 4,395.88 and 1,769.15 is: 2,441.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,185.57 : 4,395.88 = 1,769.15 : x
  2. Step 2: Convert to fraction form
    3,185.57/4,395.88 = 1,769.15/x
  3. Step 3: Cross multiply
    3,185.57x = 4,395.88 × 1,769.15
  4. Step 4: Simplify right side
    3,185.57x = 7,776,944.70
  5. Step 5: Solve for x
    x = 7,776,944.70/3,185.57
  6. Step 6: Final answer
    x = 2,441.30

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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.