Home / 5,078.71-7,614.99-3,321.60

Finding the Fourth Proportional to 5,078.71, 7,614.99 and 3,321.60

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Solution

The fourth proportional to 5,078.71, 7,614.99 and 3,321.60 is: 4,980.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,078.71 : 7,614.99 = 3,321.60 : x
  2. Step 2: Convert to fraction form
    5,078.71/7,614.99 = 3,321.60/x
  3. Step 3: Cross multiply
    5,078.71x = 7,614.99 × 3,321.60
  4. Step 4: Simplify right side
    5,078.71x = 25,293,950.78
  5. Step 5: Solve for x
    x = 25,293,950.78/5,078.71
  6. Step 6: Final answer
    x = 4,980.39

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1.5x scale

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.