Home / 3,698.40-5,104.08-2,812.68

Finding the Fourth Proportional to 3,698.40, 5,104.08 and 2,812.68

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Solution

The fourth proportional to 3,698.40, 5,104.08 and 2,812.68 is: 3,881.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,698.40 : 5,104.08 = 2,812.68 : x
  2. Step 2: Convert to fraction form
    3,698.40/5,104.08 = 2,812.68/x
  3. Step 3: Cross multiply
    3,698.40x = 5,104.08 × 2,812.68
  4. Step 4: Simplify right side
    3,698.40x = 14,356,143.73
  5. Step 5: Solve for x
    x = 14,356,143.73/3,698.40
  6. Step 6: Final answer
    x = 3,881.72

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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.