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Finding the Fourth Proportional to 8,390, 12,585.04 and 2,234

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Solution

The fourth proportional to 8,390, 12,585.04 and 2,234 is: 3,351.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,390 : 12,585.04 = 2,234 : x
  2. Step 2: Convert to fraction form
    8,390/12,585.04 = 2,234/x
  3. Step 3: Cross multiply
    8,390x = 12,585.04 × 2,234
  4. Step 4: Simplify right side
    8,390x = 28,114,979.36
  5. Step 5: Solve for x
    x = 28,114,979.36/8,390
  6. Step 6: Final answer
    x = 3,351.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.