Home / 5,274.78-7,911.54-1,379.46

Finding the Fourth Proportional to 5,274.78, 7,911.54 and 1,379.46

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Solution

The fourth proportional to 5,274.78, 7,911.54 and 1,379.46 is: 2,069.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,274.78 : 7,911.54 = 1,379.46 : x
  2. Step 2: Convert to fraction form
    5,274.78/7,911.54 = 1,379.46/x
  3. Step 3: Cross multiply
    5,274.78x = 7,911.54 × 1,379.46
  4. Step 4: Simplify right side
    5,274.78x = 10,913,652.97
  5. Step 5: Solve for x
    x = 10,913,652.97/5,274.78
  6. Step 6: Final answer
    x = 2,069.03

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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.