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Finding the Fourth Proportional to 1,674.65, 2,321.04 and 1,643.53

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Solution

The fourth proportional to 1,674.65, 2,321.04 and 1,643.53 is: 2,277.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,674.65 : 2,321.04 = 1,643.53 : x
  2. Step 2: Convert to fraction form
    1,674.65/2,321.04 = 1,643.53/x
  3. Step 3: Cross multiply
    1,674.65x = 2,321.04 × 1,643.53
  4. Step 4: Simplify right side
    1,674.65x = 3,814,698.87
  5. Step 5: Solve for x
    x = 3,814,698.87/1,674.65
  6. Step 6: Final answer
    x = 2,277.91

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.