Home / 3,618.79-5,428.61-1,152.74

Finding the Fourth Proportional to 3,618.79, 5,428.61 and 1,152.74

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Solution

The fourth proportional to 3,618.79, 5,428.61 and 1,152.74 is: 1,729.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,618.79 : 5,428.61 = 1,152.74 : x
  2. Step 2: Convert to fraction form
    3,618.79/5,428.61 = 1,152.74/x
  3. Step 3: Cross multiply
    3,618.79x = 5,428.61 × 1,152.74
  4. Step 4: Simplify right side
    3,618.79x = 6,257,770.13
  5. Step 5: Solve for x
    x = 6,257,770.13/3,618.79
  6. Step 6: Final answer
    x = 1,729.25

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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.