Home / 9,168.88-12,653.40-5,190.16

Finding the Fourth Proportional to 9,168.88, 12,653.40 and 5,190.16

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Solution

The fourth proportional to 9,168.88, 12,653.40 and 5,190.16 is: 7,162.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,168.88 : 12,653.40 = 5,190.16 : x
  2. Step 2: Convert to fraction form
    9,168.88/12,653.40 = 5,190.16/x
  3. Step 3: Cross multiply
    9,168.88x = 12,653.40 × 5,190.16
  4. Step 4: Simplify right side
    9,168.88x = 65,673,170.54
  5. Step 5: Solve for x
    x = 65,673,170.54/9,168.88
  6. Step 6: Final answer
    x = 7,162.62

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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.