Home / 5,178.80-7,149.26-3,291.84

Finding the Fourth Proportional to 5,178.80, 7,149.26 and 3,291.84

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Solution

The fourth proportional to 5,178.80, 7,149.26 and 3,291.84 is: 4,544.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,178.80 : 7,149.26 = 3,291.84 : x
  2. Step 2: Convert to fraction form
    5,178.80/7,149.26 = 3,291.84/x
  3. Step 3: Cross multiply
    5,178.80x = 7,149.26 × 3,291.84
  4. Step 4: Simplify right side
    5,178.80x = 23,534,228.27
  5. Step 5: Solve for x
    x = 23,534,228.27/5,178.80
  6. Step 6: Final answer
    x = 4,544.34

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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.