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Finding the Fourth Proportional to 8,453.91, 12,683.02 and 4,946.87

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Solution

The fourth proportional to 8,453.91, 12,683.02 and 4,946.87 is: 7,421.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,453.91 : 12,683.02 = 4,946.87 : x
  2. Step 2: Convert to fraction form
    8,453.91/12,683.02 = 4,946.87/x
  3. Step 3: Cross multiply
    8,453.91x = 12,683.02 × 4,946.87
  4. Step 4: Simplify right side
    8,453.91x = 62,741,187.73
  5. Step 5: Solve for x
    x = 62,741,187.73/8,453.91
  6. Step 6: Final answer
    x = 7,421.56

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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.