Home / 3,618.89-5,428.19-1,310.39

Finding the Fourth Proportional to 3,618.89, 5,428.19 and 1,310.39

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Solution

The fourth proportional to 3,618.89, 5,428.19 and 1,310.39 is: 1,965.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,618.89 : 5,428.19 = 1,310.39 : x
  2. Step 2: Convert to fraction form
    3,618.89/5,428.19 = 1,310.39/x
  3. Step 3: Cross multiply
    3,618.89x = 5,428.19 × 1,310.39
  4. Step 4: Simplify right side
    3,618.89x = 7,113,022.03
  5. Step 5: Solve for x
    x = 7,113,022.03/3,618.89
  6. Step 6: Final answer
    x = 1,965.53

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1.5x scale

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.