Home / 3,618.76-5,428.54-1,152.72

Finding the Fourth Proportional to 3,618.76, 5,428.54 and 1,152.72

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Solution

The fourth proportional to 3,618.76, 5,428.54 and 1,152.72 is: 1,729.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,618.76 : 5,428.54 = 1,152.72 : x
  2. Step 2: Convert to fraction form
    3,618.76/5,428.54 = 1,152.72/x
  3. Step 3: Cross multiply
    3,618.76x = 5,428.54 × 1,152.72
  4. Step 4: Simplify right side
    3,618.76x = 6,257,586.63
  5. Step 5: Solve for x
    x = 6,257,586.63/3,618.76
  6. Step 6: Final answer
    x = 1,729.21

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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.