Home / 8,489.28-12,735.60-2,645.64

Finding the Fourth Proportional to 8,489.28, 12,735.60 and 2,645.64

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Solution

The fourth proportional to 8,489.28, 12,735.60 and 2,645.64 is: 3,968.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,489.28 : 12,735.60 = 2,645.64 : x
  2. Step 2: Convert to fraction form
    8,489.28/12,735.60 = 2,645.64/x
  3. Step 3: Cross multiply
    8,489.28x = 12,735.60 × 2,645.64
  4. Step 4: Simplify right side
    8,489.28x = 33,693,812.78
  5. Step 5: Solve for x
    x = 33,693,812.78/8,489.28
  6. Step 6: Final answer
    x = 3,968.98

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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.