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Finding the Fourth Proportional to 8,469.48, 12,699.95 and 4,960.61

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Solution

The fourth proportional to 8,469.48, 12,699.95 and 4,960.61 is: 7,438.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,469.48 : 12,699.95 = 4,960.61 : x
  2. Step 2: Convert to fraction form
    8,469.48/12,699.95 = 4,960.61/x
  3. Step 3: Cross multiply
    8,469.48x = 12,699.95 × 4,960.61
  4. Step 4: Simplify right side
    8,469.48x = 62,999,410.67
  5. Step 5: Solve for x
    x = 62,999,410.67/8,469.48
  6. Step 6: Final answer
    x = 7,438.40

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1.5x scale

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.