Home / 5,187.81-7,159.20-2,829.96

Finding the Fourth Proportional to 5,187.81, 7,159.20 and 2,829.96

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Solution

The fourth proportional to 5,187.81, 7,159.20 and 2,829.96 is: 3,905.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,187.81 : 7,159.20 = 2,829.96 : x
  2. Step 2: Convert to fraction form
    5,187.81/7,159.20 = 2,829.96/x
  3. Step 3: Cross multiply
    5,187.81x = 7,159.20 × 2,829.96
  4. Step 4: Simplify right side
    5,187.81x = 20,260,249.63
  5. Step 5: Solve for x
    x = 20,260,249.63/5,187.81
  6. Step 6: Final answer
    x = 3,905.36

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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.