Home / 3,174.80-4,385.39-2,178.34

Finding the Fourth Proportional to 3,174.80, 4,385.39 and 2,178.34

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Solution

The fourth proportional to 3,174.80, 4,385.39 and 2,178.34 is: 3,008.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,174.80 : 4,385.39 = 2,178.34 : x
  2. Step 2: Convert to fraction form
    3,174.80/4,385.39 = 2,178.34/x
  3. Step 3: Cross multiply
    3,174.80x = 4,385.39 × 2,178.34
  4. Step 4: Simplify right side
    3,174.80x = 9,552,885.52
  5. Step 5: Solve for x
    x = 9,552,885.52/3,174.80
  6. Step 6: Final answer
    x = 3,008.98

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1.5x scale

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.