Home / 5,470.78-7,549.44-3,112.90

Finding the Fourth Proportional to 5,470.78, 7,549.44 and 3,112.90

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Solution

The fourth proportional to 5,470.78, 7,549.44 and 3,112.90 is: 4,295.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,470.78 : 7,549.44 = 3,112.90 : x
  2. Step 2: Convert to fraction form
    5,470.78/7,549.44 = 3,112.90/x
  3. Step 3: Cross multiply
    5,470.78x = 7,549.44 × 3,112.90
  4. Step 4: Simplify right side
    5,470.78x = 23,500,651.78
  5. Step 5: Solve for x
    x = 23,500,651.78/5,470.78
  6. Step 6: Final answer
    x = 4,295.67

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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.