Home / 9,105.76-13,638.48-5,635.36

Finding the Fourth Proportional to 9,105.76, 13,638.48 and 5,635.36

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Solution

The fourth proportional to 9,105.76, 13,638.48 and 5,635.36 is: 8,440.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,105.76 : 13,638.48 = 5,635.36 : x
  2. Step 2: Convert to fraction form
    9,105.76/13,638.48 = 5,635.36/x
  3. Step 3: Cross multiply
    9,105.76x = 13,638.48 × 5,635.36
  4. Step 4: Simplify right side
    9,105.76x = 76,857,744.65
  5. Step 5: Solve for x
    x = 76,857,744.65/9,105.76
  6. Step 6: Final answer
    x = 8,440.56

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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.