Home / 5,169.47-7,133.82-2,811.61

Finding the Fourth Proportional to 5,169.47, 7,133.82 and 2,811.61

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Solution

The fourth proportional to 5,169.47, 7,133.82 and 2,811.61 is: 3,880.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,169.47 : 7,133.82 = 2,811.61 : x
  2. Step 2: Convert to fraction form
    5,169.47/7,133.82 = 2,811.61/x
  3. Step 3: Cross multiply
    5,169.47x = 7,133.82 × 2,811.61
  4. Step 4: Simplify right side
    5,169.47x = 20,057,533.84
  5. Step 5: Solve for x
    x = 20,057,533.84/5,169.47
  6. Step 6: Final answer
    x = 3,880.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.