Home / 5,338.38-8,007.69-1,389.79

Finding the Fourth Proportional to 5,338.38, 8,007.69 and 1,389.79

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Solution

The fourth proportional to 5,338.38, 8,007.69 and 1,389.79 is: 2,084.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,338.38 : 8,007.69 = 1,389.79 : x
  2. Step 2: Convert to fraction form
    5,338.38/8,007.69 = 1,389.79/x
  3. Step 3: Cross multiply
    5,338.38x = 8,007.69 × 1,389.79
  4. Step 4: Simplify right side
    5,338.38x = 11,129,007.49
  5. Step 5: Solve for x
    x = 11,129,007.49/5,338.38
  6. Step 6: Final answer
    x = 2,084.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.