Home / 5,110.92-7,666.86-1,991.16

Finding the Fourth Proportional to 5,110.92, 7,666.86 and 1,991.16

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Solution

The fourth proportional to 5,110.92, 7,666.86 and 1,991.16 is: 2,986.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,110.92 : 7,666.86 = 1,991.16 : x
  2. Step 2: Convert to fraction form
    5,110.92/7,666.86 = 1,991.16/x
  3. Step 3: Cross multiply
    5,110.92x = 7,666.86 × 1,991.16
  4. Step 4: Simplify right side
    5,110.92x = 15,265,944.96
  5. Step 5: Solve for x
    x = 15,265,944.96/5,110.92
  6. Step 6: Final answer
    x = 2,986.93

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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.