Home / 9,190.03-12,685.13-5,213.78

Finding the Fourth Proportional to 9,190.03, 12,685.13 and 5,213.78

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Solution

The fourth proportional to 9,190.03, 12,685.13 and 5,213.78 is: 7,196.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,190.03 : 12,685.13 = 5,213.78 : x
  2. Step 2: Convert to fraction form
    9,190.03/12,685.13 = 5,213.78/x
  3. Step 3: Cross multiply
    9,190.03x = 12,685.13 × 5,213.78
  4. Step 4: Simplify right side
    9,190.03x = 66,137,508.80
  5. Step 5: Solve for x
    x = 66,137,508.80/9,190.03
  6. Step 6: Final answer
    x = 7,196.66

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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.