Home / 7,721.28-11,580.08-2,175.12

Finding the Fourth Proportional to 7,721.28, 11,580.08 and 2,175.12

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Solution

The fourth proportional to 7,721.28, 11,580.08 and 2,175.12 is: 3,262.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,721.28 : 11,580.08 = 2,175.12 : x
  2. Step 2: Convert to fraction form
    7,721.28/11,580.08 = 2,175.12/x
  3. Step 3: Cross multiply
    7,721.28x = 11,580.08 × 2,175.12
  4. Step 4: Simplify right side
    7,721.28x = 25,188,063.61
  5. Step 5: Solve for x
    x = 25,188,063.61/7,721.28
  6. Step 6: Final answer
    x = 3,262.16

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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.