Home / 6,807.80-10,212.40-2,127.02

Finding the Fourth Proportional to 6,807.80, 10,212.40 and 2,127.02

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Solution

The fourth proportional to 6,807.80, 10,212.40 and 2,127.02 is: 3,190.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,807.80 : 10,212.40 = 2,127.02 : x
  2. Step 2: Convert to fraction form
    6,807.80/10,212.40 = 2,127.02/x
  3. Step 3: Cross multiply
    6,807.80x = 10,212.40 × 2,127.02
  4. Step 4: Simplify right side
    6,807.80x = 21,721,979.05
  5. Step 5: Solve for x
    x = 21,721,979.05/6,807.80
  6. Step 6: Final answer
    x = 3,190.75

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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.