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Finding the Fourth Proportional to 3,772.88, 5,207.15 and 3,606.76

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Solution

The fourth proportional to 3,772.88, 5,207.15 and 3,606.76 is: 4,977.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,772.88 : 5,207.15 = 3,606.76 : x
  2. Step 2: Convert to fraction form
    3,772.88/5,207.15 = 3,606.76/x
  3. Step 3: Cross multiply
    3,772.88x = 5,207.15 × 3,606.76
  4. Step 4: Simplify right side
    3,772.88x = 18,780,955.86
  5. Step 5: Solve for x
    x = 18,780,955.86/3,772.88
  6. Step 6: Final answer
    x = 4,977.88

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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.