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Finding the Fourth Proportional to 3,717.76, 5,563.68 and 3,138.88

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Solution

The fourth proportional to 3,717.76, 5,563.68 and 3,138.88 is: 4,697.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,717.76 : 5,563.68 = 3,138.88 : x
  2. Step 2: Convert to fraction form
    3,717.76/5,563.68 = 3,138.88/x
  3. Step 3: Cross multiply
    3,717.76x = 5,563.68 × 3,138.88
  4. Step 4: Simplify right side
    3,717.76x = 17,463,723.88
  5. Step 5: Solve for x
    x = 17,463,723.88/3,717.76
  6. Step 6: Final answer
    x = 4,697.38

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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.