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Finding the Fourth Proportional to 3,877.88, 5,816.12 and 1,103.88

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Solution

The fourth proportional to 3,877.88, 5,816.12 and 1,103.88 is: 1,655.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,877.88 : 5,816.12 = 1,103.88 : x
  2. Step 2: Convert to fraction form
    3,877.88/5,816.12 = 1,103.88/x
  3. Step 3: Cross multiply
    3,877.88x = 5,816.12 × 1,103.88
  4. Step 4: Simplify right side
    3,877.88x = 6,420,298.55
  5. Step 5: Solve for x
    x = 6,420,298.55/3,877.88
  6. Step 6: Final answer
    x = 1,655.62

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1.5x scale

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.