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Finding the Fourth Proportional to 3,859.94, 5,787.03 and 1,807.46

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Solution

The fourth proportional to 3,859.94, 5,787.03 and 1,807.46 is: 2,709.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,859.94 : 5,787.03 = 1,807.46 : x
  2. Step 2: Convert to fraction form
    3,859.94/5,787.03 = 1,807.46/x
  3. Step 3: Cross multiply
    3,859.94x = 5,787.03 × 1,807.46
  4. Step 4: Simplify right side
    3,859.94x = 10,459,825.24
  5. Step 5: Solve for x
    x = 10,459,825.24/3,859.94
  6. Step 6: Final answer
    x = 2,709.84

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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.