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Finding the Fourth Proportional to 6,518.34, 8,992.62 and 3,864.78

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Solution

The fourth proportional to 6,518.34, 8,992.62 and 3,864.78 is: 5,331.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,518.34 : 8,992.62 = 3,864.78 : x
  2. Step 2: Convert to fraction form
    6,518.34/8,992.62 = 3,864.78/x
  3. Step 3: Cross multiply
    6,518.34x = 8,992.62 × 3,864.78
  4. Step 4: Simplify right side
    6,518.34x = 34,754,497.92
  5. Step 5: Solve for x
    x = 34,754,497.92/6,518.34
  6. Step 6: Final answer
    x = 5,331.80

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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.