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Finding the Fourth Proportional to 9,329.63, 12,874.88 and 5,137.88

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Solution

The fourth proportional to 9,329.63, 12,874.88 and 5,137.88 is: 7,090.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,329.63 : 12,874.88 = 5,137.88 : x
  2. Step 2: Convert to fraction form
    9,329.63/12,874.88 = 5,137.88/x
  3. Step 3: Cross multiply
    9,329.63x = 12,874.88 × 5,137.88
  4. Step 4: Simplify right side
    9,329.63x = 66,149,536.92
  5. Step 5: Solve for x
    x = 66,149,536.92/9,329.63
  6. Step 6: Final answer
    x = 7,090.27

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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.