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Finding the Fourth Proportional to 8,382.96, 12,573.64 and 4,221.32

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Solution

The fourth proportional to 8,382.96, 12,573.64 and 4,221.32 is: 6,331.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,382.96 : 12,573.64 = 4,221.32 : x
  2. Step 2: Convert to fraction form
    8,382.96/12,573.64 = 4,221.32/x
  3. Step 3: Cross multiply
    8,382.96x = 12,573.64 × 4,221.32
  4. Step 4: Simplify right side
    8,382.96x = 53,077,358.00
  5. Step 5: Solve for x
    x = 53,077,358.00/8,382.96
  6. Step 6: Final answer
    x = 6,331.58

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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.