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Finding the Fourth Proportional to 6,654.43, 9,981.74 and 3,190.87

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Solution

The fourth proportional to 6,654.43, 9,981.74 and 3,190.87 is: 4,786.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,654.43 : 9,981.74 = 3,190.87 : x
  2. Step 2: Convert to fraction form
    6,654.43/9,981.74 = 3,190.87/x
  3. Step 3: Cross multiply
    6,654.43x = 9,981.74 × 3,190.87
  4. Step 4: Simplify right side
    6,654.43x = 31,850,434.71
  5. Step 5: Solve for x
    x = 31,850,434.71/6,654.43
  6. Step 6: Final answer
    x = 4,786.35

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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.