Home / 6,721.96-9,279.72-4,205.56

Finding the Fourth Proportional to 6,721.96, 9,279.72 and 4,205.56

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Solution

The fourth proportional to 6,721.96, 9,279.72 and 4,205.56 is: 5,805.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,721.96 : 9,279.72 = 4,205.56 : x
  2. Step 2: Convert to fraction form
    6,721.96/9,279.72 = 4,205.56/x
  3. Step 3: Cross multiply
    6,721.96x = 9,279.72 × 4,205.56
  4. Step 4: Simplify right side
    6,721.96x = 39,026,419.24
  5. Step 5: Solve for x
    x = 39,026,419.24/6,721.96
  6. Step 6: Final answer
    x = 5,805.81

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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.