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Finding the Fourth Proportional to 3,764.94, 5,648.04 and 1,685.40

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Solution

The fourth proportional to 3,764.94, 5,648.04 and 1,685.40 is: 2,528.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,764.94 : 5,648.04 = 1,685.40 : x
  2. Step 2: Convert to fraction form
    3,764.94/5,648.04 = 1,685.40/x
  3. Step 3: Cross multiply
    3,764.94x = 5,648.04 × 1,685.40
  4. Step 4: Simplify right side
    3,764.94x = 9,519,206.62
  5. Step 5: Solve for x
    x = 9,519,206.62/3,764.94
  6. Step 6: Final answer
    x = 2,528.38

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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.