Home / 3,178.23-4,764.94-1,421.11

Finding the Fourth Proportional to 3,178.23, 4,764.94 and 1,421.11

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Solution

The fourth proportional to 3,178.23, 4,764.94 and 1,421.11 is: 2,130.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,178.23 : 4,764.94 = 1,421.11 : x
  2. Step 2: Convert to fraction form
    3,178.23/4,764.94 = 1,421.11/x
  3. Step 3: Cross multiply
    3,178.23x = 4,764.94 × 1,421.11
  4. Step 4: Simplify right side
    3,178.23x = 6,771,503.88
  5. Step 5: Solve for x
    x = 6,771,503.88/3,178.23
  6. Step 6: Final answer
    x = 2,130.59

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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.