Home / 5,212.56-7,821.18-2,291.70

Finding the Fourth Proportional to 5,212.56, 7,821.18 and 2,291.70

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Solution

The fourth proportional to 5,212.56, 7,821.18 and 2,291.70 is: 3,438.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,212.56 : 7,821.18 = 2,291.70 : x
  2. Step 2: Convert to fraction form
    5,212.56/7,821.18 = 2,291.70/x
  3. Step 3: Cross multiply
    5,212.56x = 7,821.18 × 2,291.70
  4. Step 4: Simplify right side
    5,212.56x = 17,923,798.21
  5. Step 5: Solve for x
    x = 17,923,798.21/5,212.56
  6. Step 6: Final answer
    x = 3,438.58

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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.