Home / 7,420.93-11,131.25-2,979.60

Finding the Fourth Proportional to 7,420.93, 11,131.25 and 2,979.60

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Solution

The fourth proportional to 7,420.93, 11,131.25 and 2,979.60 is: 4,469.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,420.93 : 11,131.25 = 2,979.60 : x
  2. Step 2: Convert to fraction form
    7,420.93/11,131.25 = 2,979.60/x
  3. Step 3: Cross multiply
    7,420.93x = 11,131.25 × 2,979.60
  4. Step 4: Simplify right side
    7,420.93x = 33,166,672.50
  5. Step 5: Solve for x
    x = 33,166,672.50/7,420.93
  6. Step 6: Final answer
    x = 4,469.34

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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.