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Finding the Fourth Proportional to 8,325, 11,489.87 and 4,787.53

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Solution

The fourth proportional to 8,325, 11,489.87 and 4,787.53 is: 6,607.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,325 : 11,489.87 = 4,787.53 : x
  2. Step 2: Convert to fraction form
    8,325/11,489.87 = 4,787.53/x
  3. Step 3: Cross multiply
    8,325x = 11,489.87 × 4,787.53
  4. Step 4: Simplify right side
    8,325x = 55,008,080.57
  5. Step 5: Solve for x
    x = 55,008,080.57/8,325
  6. Step 6: Final answer
    x = 6,607.58

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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.