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Finding the Fourth Proportional to 7,173.08, 10,760.24 and 1,978.96

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Solution

The fourth proportional to 7,173.08, 10,760.24 and 1,978.96 is: 2,968.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,173.08 : 10,760.24 = 1,978.96 : x
  2. Step 2: Convert to fraction form
    7,173.08/10,760.24 = 1,978.96/x
  3. Step 3: Cross multiply
    7,173.08x = 10,760.24 × 1,978.96
  4. Step 4: Simplify right side
    7,173.08x = 21,294,065.07
  5. Step 5: Solve for x
    x = 21,294,065.07/7,173.08
  6. Step 6: Final answer
    x = 2,968.61

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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.