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Finding the Fourth Proportional to 3,708.40, 5,555.40 and 3,449.20

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Solution

The fourth proportional to 3,708.40, 5,555.40 and 3,449.20 is: 5,167.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,708.40 : 5,555.40 = 3,449.20 : x
  2. Step 2: Convert to fraction form
    3,708.40/5,555.40 = 3,449.20/x
  3. Step 3: Cross multiply
    3,708.40x = 5,555.40 × 3,449.20
  4. Step 4: Simplify right side
    3,708.40x = 19,161,685.68
  5. Step 5: Solve for x
    x = 19,161,685.68/3,708.40
  6. Step 6: Final answer
    x = 5,167.10

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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.