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Finding the Fourth Proportional to 3,855.64, 5,783.50 and 3,038.28

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Solution

The fourth proportional to 3,855.64, 5,783.50 and 3,038.28 is: 4,557.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,855.64 : 5,783.50 = 3,038.28 : x
  2. Step 2: Convert to fraction form
    3,855.64/5,783.50 = 3,038.28/x
  3. Step 3: Cross multiply
    3,855.64x = 5,783.50 × 3,038.28
  4. Step 4: Simplify right side
    3,855.64x = 17,571,892.38
  5. Step 5: Solve for x
    x = 17,571,892.38/3,855.64
  6. Step 6: Final answer
    x = 4,557.45

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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.