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Finding the Fourth Proportional to 3,763.64, 5,642.73 and 1,811.74

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Solution

The fourth proportional to 3,763.64, 5,642.73 and 1,811.74 is: 2,716.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,763.64 : 5,642.73 = 1,811.74 : x
  2. Step 2: Convert to fraction form
    3,763.64/5,642.73 = 1,811.74/x
  3. Step 3: Cross multiply
    3,763.64x = 5,642.73 × 1,811.74
  4. Step 4: Simplify right side
    3,763.64x = 10,223,159.65
  5. Step 5: Solve for x
    x = 10,223,159.65/3,763.64
  6. Step 6: Final answer
    x = 2,716.30

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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.