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Finding the Fourth Proportional to 9,133.92, 12,656.34 and 8,929.80

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Solution

The fourth proportional to 9,133.92, 12,656.34 and 8,929.80 is: 12,373.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,133.92 : 12,656.34 = 8,929.80 : x
  2. Step 2: Convert to fraction form
    9,133.92/12,656.34 = 8,929.80/x
  3. Step 3: Cross multiply
    9,133.92x = 12,656.34 × 8,929.80
  4. Step 4: Simplify right side
    9,133.92x = 113,018,584.93
  5. Step 5: Solve for x
    x = 113,018,584.93/9,133.92
  6. Step 6: Final answer
    x = 12,373.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.