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Finding the Fourth Proportional to 8,986.78, 12,410.31 and 8,495.92

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Solution

The fourth proportional to 8,986.78, 12,410.31 and 8,495.92 is: 11,732.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,986.78 : 12,410.31 = 8,495.92 : x
  2. Step 2: Convert to fraction form
    8,986.78/12,410.31 = 8,495.92/x
  3. Step 3: Cross multiply
    8,986.78x = 12,410.31 × 8,495.92
  4. Step 4: Simplify right side
    8,986.78x = 105,437,000.94
  5. Step 5: Solve for x
    x = 105,437,000.94/8,986.78
  6. Step 6: Final answer
    x = 11,732.46

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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.