Home / 9,192.72-12,686.64-5,213.88

Finding the Fourth Proportional to 9,192.72, 12,686.64 and 5,213.88

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Solution

The fourth proportional to 9,192.72, 12,686.64 and 5,213.88 is: 7,195.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,192.72 : 12,686.64 = 5,213.88 : x
  2. Step 2: Convert to fraction form
    9,192.72/12,686.64 = 5,213.88/x
  3. Step 3: Cross multiply
    9,192.72x = 12,686.64 × 5,213.88
  4. Step 4: Simplify right side
    9,192.72x = 66,146,618.56
  5. Step 5: Solve for x
    x = 66,146,618.56/9,192.72
  6. Step 6: Final answer
    x = 7,195.54

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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.