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Finding the Fourth Proportional to 8,660.82, 12,986.56 and 4,490.51

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Solution

The fourth proportional to 8,660.82, 12,986.56 and 4,490.51 is: 6,733.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,660.82 : 12,986.56 = 4,490.51 : x
  2. Step 2: Convert to fraction form
    8,660.82/12,986.56 = 4,490.51/x
  3. Step 3: Cross multiply
    8,660.82x = 12,986.56 × 4,490.51
  4. Step 4: Simplify right side
    8,660.82x = 58,316,218.23
  5. Step 5: Solve for x
    x = 58,316,218.23/8,660.82
  6. Step 6: Final answer
    x = 6,733.33

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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.