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Finding the Fourth Proportional to 8,673.74, 12,989.63 and 4,964.73

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Solution

The fourth proportional to 8,673.74, 12,989.63 and 4,964.73 is: 7,435.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,673.74 : 12,989.63 = 4,964.73 : x
  2. Step 2: Convert to fraction form
    8,673.74/12,989.63 = 4,964.73/x
  3. Step 3: Cross multiply
    8,673.74x = 12,989.63 × 4,964.73
  4. Step 4: Simplify right side
    8,673.74x = 64,490,005.75
  5. Step 5: Solve for x
    x = 64,490,005.75/8,673.74
  6. Step 6: Final answer
    x = 7,435.09

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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.