Home / 2,807.33-3,871.64-1,687.86

Finding the Fourth Proportional to 2,807.33, 3,871.64 and 1,687.86

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Solution

The fourth proportional to 2,807.33, 3,871.64 and 1,687.86 is: 2,327.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,807.33 : 3,871.64 = 1,687.86 : x
  2. Step 2: Convert to fraction form
    2,807.33/3,871.64 = 1,687.86/x
  3. Step 3: Cross multiply
    2,807.33x = 3,871.64 × 1,687.86
  4. Step 4: Simplify right side
    2,807.33x = 6,534,790.51
  5. Step 5: Solve for x
    x = 6,534,790.51/2,807.33
  6. Step 6: Final answer
    x = 2,327.76

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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.