Home / 5,404.20-8,101.40-1,940.64

Finding the Fourth Proportional to 5,404.20, 8,101.40 and 1,940.64

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Solution

The fourth proportional to 5,404.20, 8,101.40 and 1,940.64 is: 2,909.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,404.20 : 8,101.40 = 1,940.64 : x
  2. Step 2: Convert to fraction form
    5,404.20/8,101.40 = 1,940.64/x
  3. Step 3: Cross multiply
    5,404.20x = 8,101.40 × 1,940.64
  4. Step 4: Simplify right side
    5,404.20x = 15,721,900.90
  5. Step 5: Solve for x
    x = 15,721,900.90/5,404.20
  6. Step 6: Final answer
    x = 2,909.20

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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.