Home / 5,416.80-7,473.66-3,178.80

Finding the Fourth Proportional to 5,416.80, 7,473.66 and 3,178.80

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Solution

The fourth proportional to 5,416.80, 7,473.66 and 3,178.80 is: 4,385.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,416.80 : 7,473.66 = 3,178.80 : x
  2. Step 2: Convert to fraction form
    5,416.80/7,473.66 = 3,178.80/x
  3. Step 3: Cross multiply
    5,416.80x = 7,473.66 × 3,178.80
  4. Step 4: Simplify right side
    5,416.80x = 23,757,270.41
  5. Step 5: Solve for x
    x = 23,757,270.41/5,416.80
  6. Step 6: Final answer
    x = 4,385.85

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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.