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Finding the Fourth Proportional to 8,902.08, 12,285 and 5,176.08

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Solution

The fourth proportional to 8,902.08, 12,285 and 5,176.08 is: 7,143.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,902.08 : 12,285 = 5,176.08 : x
  2. Step 2: Convert to fraction form
    8,902.08/12,285 = 5,176.08/x
  3. Step 3: Cross multiply
    8,902.08x = 12,285 × 5,176.08
  4. Step 4: Simplify right side
    8,902.08x = 63,588,142.80
  5. Step 5: Solve for x
    x = 63,588,142.80/8,902.08
  6. Step 6: Final answer
    x = 7,143.07

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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.