Home / 6,638.40-9,160.72-3,653.92

Finding the Fourth Proportional to 6,638.40, 9,160.72 and 3,653.92

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Solution

The fourth proportional to 6,638.40, 9,160.72 and 3,653.92 is: 5,042.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,638.40 : 9,160.72 = 3,653.92 : x
  2. Step 2: Convert to fraction form
    6,638.40/9,160.72 = 3,653.92/x
  3. Step 3: Cross multiply
    6,638.40x = 9,160.72 × 3,653.92
  4. Step 4: Simplify right side
    6,638.40x = 33,472,538.02
  5. Step 5: Solve for x
    x = 33,472,538.02/6,638.40
  6. Step 6: Final answer
    x = 5,042.26

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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.