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Finding the Fourth Proportional to 3,689.69, 5,541.74 and 3,554.33

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Solution

The fourth proportional to 3,689.69, 5,541.74 and 3,554.33 is: 5,338.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,689.69 : 5,541.74 = 3,554.33 : x
  2. Step 2: Convert to fraction form
    3,689.69/5,541.74 = 3,554.33/x
  3. Step 3: Cross multiply
    3,689.69x = 5,541.74 × 3,554.33
  4. Step 4: Simplify right side
    3,689.69x = 19,697,154.96
  5. Step 5: Solve for x
    x = 19,697,154.96/3,689.69
  6. Step 6: Final answer
    x = 5,338.43

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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.