Home / 5,109.46-7,051.05-2,871.43

Finding the Fourth Proportional to 5,109.46, 7,051.05 and 2,871.43

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Solution

The fourth proportional to 5,109.46, 7,051.05 and 2,871.43 is: 3,962.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,109.46 : 7,051.05 = 2,871.43 : x
  2. Step 2: Convert to fraction form
    5,109.46/7,051.05 = 2,871.43/x
  3. Step 3: Cross multiply
    5,109.46x = 7,051.05 × 2,871.43
  4. Step 4: Simplify right side
    5,109.46x = 20,246,596.50
  5. Step 5: Solve for x
    x = 20,246,596.50/5,109.46
  6. Step 6: Final answer
    x = 3,962.57

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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.