Home / 3,618.68-5,428.05-1,277.03

Finding the Fourth Proportional to 3,618.68, 5,428.05 and 1,277.03

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Solution

The fourth proportional to 3,618.68, 5,428.05 and 1,277.03 is: 1,915.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,618.68 : 5,428.05 = 1,277.03 : x
  2. Step 2: Convert to fraction form
    3,618.68/5,428.05 = 1,277.03/x
  3. Step 3: Cross multiply
    3,618.68x = 5,428.05 × 1,277.03
  4. Step 4: Simplify right side
    3,618.68x = 6,931,755.55
  5. Step 5: Solve for x
    x = 6,931,755.55/3,618.68
  6. Step 6: Final answer
    x = 1,915.55

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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.