Home / 5,286.36-7,288.44-4,338.72

Finding the Fourth Proportional to 5,286.36, 7,288.44 and 4,338.72

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Solution

The fourth proportional to 5,286.36, 7,288.44 and 4,338.72 is: 5,981.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,286.36 : 7,288.44 = 4,338.72 : x
  2. Step 2: Convert to fraction form
    5,286.36/7,288.44 = 4,338.72/x
  3. Step 3: Cross multiply
    5,286.36x = 7,288.44 × 4,338.72
  4. Step 4: Simplify right side
    5,286.36x = 31,622,500.40
  5. Step 5: Solve for x
    x = 31,622,500.40/5,286.36
  6. Step 6: Final answer
    x = 5,981.90

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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.