Home / 5,284.38-7,926.60-1,388.70

Finding the Fourth Proportional to 5,284.38, 7,926.60 and 1,388.70

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Solution

The fourth proportional to 5,284.38, 7,926.60 and 1,388.70 is: 2,083.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,284.38 : 7,926.60 = 1,388.70 : x
  2. Step 2: Convert to fraction form
    5,284.38/7,926.60 = 1,388.70/x
  3. Step 3: Cross multiply
    5,284.38x = 7,926.60 × 1,388.70
  4. Step 4: Simplify right side
    5,284.38x = 11,007,669.42
  5. Step 5: Solve for x
    x = 11,007,669.42/5,284.38
  6. Step 6: Final answer
    x = 2,083.06

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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.