Home / 2,871.63-4,308.93-2,178.09

Finding the Fourth Proportional to 2,871.63, 4,308.93 and 2,178.09

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Solution

The fourth proportional to 2,871.63, 4,308.93 and 2,178.09 is: 3,268.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,871.63 : 4,308.93 = 2,178.09 : x
  2. Step 2: Convert to fraction form
    2,871.63/4,308.93 = 2,178.09/x
  3. Step 3: Cross multiply
    2,871.63x = 4,308.93 × 2,178.09
  4. Step 4: Simplify right side
    2,871.63x = 9,385,237.34
  5. Step 5: Solve for x
    x = 9,385,237.34/2,871.63
  6. Step 6: Final answer
    x = 3,268.26

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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.