Home / 3,688.38-5,531.67-1,091.34

Finding the Fourth Proportional to 3,688.38, 5,531.67 and 1,091.34

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Solution

The fourth proportional to 3,688.38, 5,531.67 and 1,091.34 is: 1,636.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,688.38 : 5,531.67 = 1,091.34 : x
  2. Step 2: Convert to fraction form
    3,688.38/5,531.67 = 1,091.34/x
  3. Step 3: Cross multiply
    3,688.38x = 5,531.67 × 1,091.34
  4. Step 4: Simplify right side
    3,688.38x = 6,036,932.74
  5. Step 5: Solve for x
    x = 6,036,932.74/3,688.38
  6. Step 6: Final answer
    x = 1,636.74

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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.