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Finding the Fourth Proportional to 3,660.64, 5,487.12 and 2,798.56

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Solution

The fourth proportional to 3,660.64, 5,487.12 and 2,798.56 is: 4,194.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,660.64 : 5,487.12 = 2,798.56 : x
  2. Step 2: Convert to fraction form
    3,660.64/5,487.12 = 2,798.56/x
  3. Step 3: Cross multiply
    3,660.64x = 5,487.12 × 2,798.56
  4. Step 4: Simplify right side
    3,660.64x = 15,356,034.55
  5. Step 5: Solve for x
    x = 15,356,034.55/3,660.64
  6. Step 6: Final answer
    x = 4,194.90

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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.