Home / 5,129.58-7,079.19-3,868.41

Finding the Fourth Proportional to 5,129.58, 7,079.19 and 3,868.41

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Solution

The fourth proportional to 5,129.58, 7,079.19 and 3,868.41 is: 5,338.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,129.58 : 7,079.19 = 3,868.41 : x
  2. Step 2: Convert to fraction form
    5,129.58/7,079.19 = 3,868.41/x
  3. Step 3: Cross multiply
    5,129.58x = 7,079.19 × 3,868.41
  4. Step 4: Simplify right side
    5,129.58x = 27,385,209.39
  5. Step 5: Solve for x
    x = 27,385,209.39/5,129.58
  6. Step 6: Final answer
    x = 5,338.68

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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.