Home / 7,192.80-10,789.36-1,998.64

Finding the Fourth Proportional to 7,192.80, 10,789.36 and 1,998.64

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Solution

The fourth proportional to 7,192.80, 10,789.36 and 1,998.64 is: 2,998.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,192.80 : 10,789.36 = 1,998.64 : x
  2. Step 2: Convert to fraction form
    7,192.80/10,789.36 = 1,998.64/x
  3. Step 3: Cross multiply
    7,192.80x = 10,789.36 × 1,998.64
  4. Step 4: Simplify right side
    7,192.80x = 21,564,046.47
  5. Step 5: Solve for x
    x = 21,564,046.47/7,192.80
  6. Step 6: Final answer
    x = 2,998.00

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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.