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Finding the Fourth Proportional to 8,000.64, 11,990.16 and 5,073.84

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Solution

The fourth proportional to 8,000.64, 11,990.16 and 5,073.84 is: 7,603.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,000.64 : 11,990.16 = 5,073.84 : x
  2. Step 2: Convert to fraction form
    8,000.64/11,990.16 = 5,073.84/x
  3. Step 3: Cross multiply
    8,000.64x = 11,990.16 × 5,073.84
  4. Step 4: Simplify right side
    8,000.64x = 60,836,153.41
  5. Step 5: Solve for x
    x = 60,836,153.41/8,000.64
  6. Step 6: Final answer
    x = 7,603.91

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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.