Home / 7,109.80-10,663.34-1,914.36

Finding the Fourth Proportional to 7,109.80, 10,663.34 and 1,914.36

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Solution

The fourth proportional to 7,109.80, 10,663.34 and 1,914.36 is: 2,871.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,109.80 : 10,663.34 = 1,914.36 : x
  2. Step 2: Convert to fraction form
    7,109.80/10,663.34 = 1,914.36/x
  3. Step 3: Cross multiply
    7,109.80x = 10,663.34 × 1,914.36
  4. Step 4: Simplify right side
    7,109.80x = 20,413,471.56
  5. Step 5: Solve for x
    x = 20,413,471.56/7,109.80
  6. Step 6: Final answer
    x = 2,871.17

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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.