Home / 8,979.28-13,462.67-3,978.94

Finding the Fourth Proportional to 8,979.28, 13,462.67 and 3,978.94

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Solution

The fourth proportional to 8,979.28, 13,462.67 and 3,978.94 is: 5,965.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,979.28 : 13,462.67 = 3,978.94 : x
  2. Step 2: Convert to fraction form
    8,979.28/13,462.67 = 3,978.94/x
  3. Step 3: Cross multiply
    8,979.28x = 13,462.67 × 3,978.94
  4. Step 4: Simplify right side
    8,979.28x = 53,567,135.32
  5. Step 5: Solve for x
    x = 53,567,135.32/8,979.28
  6. Step 6: Final answer
    x = 5,965.64

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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.