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Finding the Fourth Proportional to 3,660.80, 5,491.20 and 2,348.60

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Solution

The fourth proportional to 3,660.80, 5,491.20 and 2,348.60 is: 3,522.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,660.80 : 5,491.20 = 2,348.60 : x
  2. Step 2: Convert to fraction form
    3,660.80/5,491.20 = 2,348.60/x
  3. Step 3: Cross multiply
    3,660.80x = 5,491.20 × 2,348.60
  4. Step 4: Simplify right side
    3,660.80x = 12,896,632.32
  5. Step 5: Solve for x
    x = 12,896,632.32/3,660.80
  6. Step 6: Final answer
    x = 3,522.90

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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.