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Finding the Fourth Proportional to 8,673.92, 12,989.76 and 4,500.80

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Solution

The fourth proportional to 8,673.92, 12,989.76 and 4,500.80 is: 6,740.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,673.92 : 12,989.76 = 4,500.80 : x
  2. Step 2: Convert to fraction form
    8,673.92/12,989.76 = 4,500.80/x
  3. Step 3: Cross multiply
    8,673.92x = 12,989.76 × 4,500.80
  4. Step 4: Simplify right side
    8,673.92x = 58,464,311.81
  5. Step 5: Solve for x
    x = 58,464,311.81/8,673.92
  6. Step 6: Final answer
    x = 6,740.24

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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.