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Finding the Fourth Proportional to 3,609.98, 5,415.46 and 1,528.68

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Solution

The fourth proportional to 3,609.98, 5,415.46 and 1,528.68 is: 2,293.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,609.98 : 5,415.46 = 1,528.68 : x
  2. Step 2: Convert to fraction form
    3,609.98/5,415.46 = 1,528.68/x
  3. Step 3: Cross multiply
    3,609.98x = 5,415.46 × 1,528.68
  4. Step 4: Simplify right side
    3,609.98x = 8,278,501.57
  5. Step 5: Solve for x
    x = 8,278,501.57/3,609.98
  6. Step 6: Final answer
    x = 2,293.23

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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.