Home / 3,630.76-5,446.85-1,290.87

Finding the Fourth Proportional to 3,630.76, 5,446.85 and 1,290.87

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Solution

The fourth proportional to 3,630.76, 5,446.85 and 1,290.87 is: 1,936.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,630.76 : 5,446.85 = 1,290.87 : x
  2. Step 2: Convert to fraction form
    3,630.76/5,446.85 = 1,290.87/x
  3. Step 3: Cross multiply
    3,630.76x = 5,446.85 × 1,290.87
  4. Step 4: Simplify right side
    3,630.76x = 7,031,168.81
  5. Step 5: Solve for x
    x = 7,031,168.81/3,630.76
  6. Step 6: Final answer
    x = 1,936.56

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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.