Home / 8,391.82-11,581.32-5,554.30

Finding the Fourth Proportional to 8,391.82, 11,581.32 and 5,554.30

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Solution

The fourth proportional to 8,391.82, 11,581.32 and 5,554.30 is: 7,665.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,391.82 : 11,581.32 = 5,554.30 : x
  2. Step 2: Convert to fraction form
    8,391.82/11,581.32 = 5,554.30/x
  3. Step 3: Cross multiply
    8,391.82x = 11,581.32 × 5,554.30
  4. Step 4: Simplify right side
    8,391.82x = 64,326,125.68
  5. Step 5: Solve for x
    x = 64,326,125.68/8,391.82
  6. Step 6: Final answer
    x = 7,665.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.