Home / 8,650.43-12,979.74-5,147.36

Finding the Fourth Proportional to 8,650.43, 12,979.74 and 5,147.36

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Solution

The fourth proportional to 8,650.43, 12,979.74 and 5,147.36 is: 7,723.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,650.43 : 12,979.74 = 5,147.36 : x
  2. Step 2: Convert to fraction form
    8,650.43/12,979.74 = 5,147.36/x
  3. Step 3: Cross multiply
    8,650.43x = 12,979.74 × 5,147.36
  4. Step 4: Simplify right side
    8,650.43x = 66,811,394.49
  5. Step 5: Solve for x
    x = 66,811,394.49/8,650.43
  6. Step 6: Final answer
    x = 7,723.48

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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.