Home / 9,192.78-12,686.13-5,213.79

Finding the Fourth Proportional to 9,192.78, 12,686.13 and 5,213.79

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Solution

The fourth proportional to 9,192.78, 12,686.13 and 5,213.79 is: 7,195.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,192.78 : 12,686.13 = 5,213.79 : x
  2. Step 2: Convert to fraction form
    9,192.78/12,686.13 = 5,213.79/x
  3. Step 3: Cross multiply
    9,192.78x = 12,686.13 × 5,213.79
  4. Step 4: Simplify right side
    9,192.78x = 66,142,817.73
  5. Step 5: Solve for x
    x = 66,142,817.73/9,192.78
  6. Step 6: Final answer
    x = 7,195.08

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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.