Home / 3,618.05-5,429.21-1,538.48

Finding the Fourth Proportional to 3,618.05, 5,429.21 and 1,538.48

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Solution

The fourth proportional to 3,618.05, 5,429.21 and 1,538.48 is: 2,308.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,618.05 : 5,429.21 = 1,538.48 : x
  2. Step 2: Convert to fraction form
    3,618.05/5,429.21 = 1,538.48/x
  3. Step 3: Cross multiply
    3,618.05x = 5,429.21 × 1,538.48
  4. Step 4: Simplify right side
    3,618.05x = 8,352,696.16
  5. Step 5: Solve for x
    x = 8,352,696.16/3,618.05
  6. Step 6: Final answer
    x = 2,308.62

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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.