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Finding the Fourth Proportional to 5,890.55, 8,128.98 and 3,238.12

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Solution

The fourth proportional to 5,890.55, 8,128.98 and 3,238.12 is: 4,468.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,890.55 : 8,128.98 = 3,238.12 : x
  2. Step 2: Convert to fraction form
    5,890.55/8,128.98 = 3,238.12/x
  3. Step 3: Cross multiply
    5,890.55x = 8,128.98 × 3,238.12
  4. Step 4: Simplify right side
    5,890.55x = 26,322,636.63
  5. Step 5: Solve for x
    x = 26,322,636.63/5,890.55
  6. Step 6: Final answer
    x = 4,468.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.