Home / 3,453.12-5,178.98-2,871.86

Finding the Fourth Proportional to 3,453.12, 5,178.98 and 2,871.86

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Solution

The fourth proportional to 3,453.12, 5,178.98 and 2,871.86 is: 4,307.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,453.12 : 5,178.98 = 2,871.86 : x
  2. Step 2: Convert to fraction form
    3,453.12/5,178.98 = 2,871.86/x
  3. Step 3: Cross multiply
    3,453.12x = 5,178.98 × 2,871.86
  4. Step 4: Simplify right side
    3,453.12x = 14,873,299.37
  5. Step 5: Solve for x
    x = 14,873,299.37/3,453.12
  6. Step 6: Final answer
    x = 4,307.20

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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.