Home / 5,399.40-8,100.60-2,113.42

Finding the Fourth Proportional to 5,399.40, 8,100.60 and 2,113.42

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Solution

The fourth proportional to 5,399.40, 8,100.60 and 2,113.42 is: 3,170.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,399.40 : 8,100.60 = 2,113.42 : x
  2. Step 2: Convert to fraction form
    5,399.40/8,100.60 = 2,113.42/x
  3. Step 3: Cross multiply
    5,399.40x = 8,100.60 × 2,113.42
  4. Step 4: Simplify right side
    5,399.40x = 17,119,970.05
  5. Step 5: Solve for x
    x = 17,119,970.05/5,399.40
  6. Step 6: Final answer
    x = 3,170.72

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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.