Home / 3,913.03-5,399.93-2,120.50

Finding the Fourth Proportional to 3,913.03, 5,399.93 and 2,120.50

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Solution

The fourth proportional to 3,913.03, 5,399.93 and 2,120.50 is: 2,926.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,913.03 : 5,399.93 = 2,120.50 : x
  2. Step 2: Convert to fraction form
    3,913.03/5,399.93 = 2,120.50/x
  3. Step 3: Cross multiply
    3,913.03x = 5,399.93 × 2,120.50
  4. Step 4: Simplify right side
    3,913.03x = 11,450,527.46
  5. Step 5: Solve for x
    x = 11,450,527.46/3,913.03
  6. Step 6: Final answer
    x = 2,926.26

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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.