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Finding the Fourth Proportional to 8,432, 12,632.16 and 7,795.52

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Solution

The fourth proportional to 8,432, 12,632.16 and 7,795.52 is: 11,678.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,432 : 12,632.16 = 7,795.52 : x
  2. Step 2: Convert to fraction form
    8,432/12,632.16 = 7,795.52/x
  3. Step 3: Cross multiply
    8,432x = 12,632.16 × 7,795.52
  4. Step 4: Simplify right side
    8,432x = 98,474,255.92
  5. Step 5: Solve for x
    x = 98,474,255.92/8,432
  6. Step 6: Final answer
    x = 11,678.64

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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.