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Finding the Fourth Proportional to 8,144.64, 11,239.43 and 4,787.80

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Solution

The fourth proportional to 8,144.64, 11,239.43 and 4,787.80 is: 6,607.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,144.64 : 11,239.43 = 4,787.80 : x
  2. Step 2: Convert to fraction form
    8,144.64/11,239.43 = 4,787.80/x
  3. Step 3: Cross multiply
    8,144.64x = 11,239.43 × 4,787.80
  4. Step 4: Simplify right side
    8,144.64x = 53,812,090.92
  5. Step 5: Solve for x
    x = 53,812,090.92/8,144.64
  6. Step 6: Final answer
    x = 6,607.06

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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.