Home / 7,192.19-10,781.81-2,808.57

Finding the Fourth Proportional to 7,192.19, 10,781.81 and 2,808.57

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Solution

The fourth proportional to 7,192.19, 10,781.81 and 2,808.57 is: 4,210.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,192.19 : 10,781.81 = 2,808.57 : x
  2. Step 2: Convert to fraction form
    7,192.19/10,781.81 = 2,808.57/x
  3. Step 3: Cross multiply
    7,192.19x = 10,781.81 × 2,808.57
  4. Step 4: Simplify right side
    7,192.19x = 30,281,505.03
  5. Step 5: Solve for x
    x = 30,281,505.03/7,192.19
  6. Step 6: Final answer
    x = 4,210.33

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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.