Home / 5,412.79-8,120.00-2,292.81

Finding the Fourth Proportional to 5,412.79, 8,120.00 and 2,292.81

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Solution

The fourth proportional to 5,412.79, 8,120.00 and 2,292.81 is: 3,439.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,412.79 : 8,120.00 = 2,292.81 : x
  2. Step 2: Convert to fraction form
    5,412.79/8,120.00 = 2,292.81/x
  3. Step 3: Cross multiply
    5,412.79x = 8,120.00 × 2,292.81
  4. Step 4: Simplify right side
    5,412.79x = 18,617,579.58
  5. Step 5: Solve for x
    x = 18,617,579.58/5,412.79
  6. Step 6: Final answer
    x = 3,439.56

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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.