Home / 3,618.58-5,428.50-1,152.76

Finding the Fourth Proportional to 3,618.58, 5,428.50 and 1,152.76

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Solution

The fourth proportional to 3,618.58, 5,428.50 and 1,152.76 is: 1,729.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,618.58 : 5,428.50 = 1,152.76 : x
  2. Step 2: Convert to fraction form
    3,618.58/5,428.50 = 1,152.76/x
  3. Step 3: Cross multiply
    3,618.58x = 5,428.50 × 1,152.76
  4. Step 4: Simplify right side
    3,618.58x = 6,257,757.66
  5. Step 5: Solve for x
    x = 6,257,757.66/3,618.58
  6. Step 6: Final answer
    x = 1,729.34

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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.