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Finding the Fourth Proportional to 3,893.64, 5,373.00 and 2,124.89

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Solution

The fourth proportional to 3,893.64, 5,373.00 and 2,124.89 is: 2,932.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,893.64 : 5,373.00 = 2,124.89 : x
  2. Step 2: Convert to fraction form
    3,893.64/5,373.00 = 2,124.89/x
  3. Step 3: Cross multiply
    3,893.64x = 5,373.00 × 2,124.89
  4. Step 4: Simplify right side
    3,893.64x = 11,417,023.35
  5. Step 5: Solve for x
    x = 11,417,023.35/3,893.64
  6. Step 6: Final answer
    x = 2,932.22

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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.