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Finding the Fourth Proportional to 3,616.70, 5,425.05 and 1,019.63

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Solution

The fourth proportional to 3,616.70, 5,425.05 and 1,019.63 is: 1,529.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,616.70 : 5,425.05 = 1,019.63 : x
  2. Step 2: Convert to fraction form
    3,616.70/5,425.05 = 1,019.63/x
  3. Step 3: Cross multiply
    3,616.70x = 5,425.05 × 1,019.63
  4. Step 4: Simplify right side
    3,616.70x = 5,531,516.61
  5. Step 5: Solve for x
    x = 5,531,516.61/3,616.70
  6. Step 6: Final answer
    x = 1,529.44

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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.