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Finding the Fourth Proportional to 9,129.66, 12,594.09 and 6,292.09

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Solution

The fourth proportional to 9,129.66, 12,594.09 and 6,292.09 is: 8,679.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,129.66 : 12,594.09 = 6,292.09 : x
  2. Step 2: Convert to fraction form
    9,129.66/12,594.09 = 6,292.09/x
  3. Step 3: Cross multiply
    9,129.66x = 12,594.09 × 6,292.09
  4. Step 4: Simplify right side
    9,129.66x = 79,243,147.75
  5. Step 5: Solve for x
    x = 79,243,147.75/9,129.66
  6. Step 6: Final answer
    x = 8,679.75

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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.