Home / 3,764.40-5,639.04-2,118.48

Finding the Fourth Proportional to 3,764.40, 5,639.04 and 2,118.48

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Solution

The fourth proportional to 3,764.40, 5,639.04 and 2,118.48 is: 3,173.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,764.40 : 5,639.04 = 2,118.48 : x
  2. Step 2: Convert to fraction form
    3,764.40/5,639.04 = 2,118.48/x
  3. Step 3: Cross multiply
    3,764.40x = 5,639.04 × 2,118.48
  4. Step 4: Simplify right side
    3,764.40x = 11,946,193.46
  5. Step 5: Solve for x
    x = 11,946,193.46/3,764.40
  6. Step 6: Final answer
    x = 3,173.47

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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.