Home / 5,109.78-7,046.28-4,812.12

Finding the Fourth Proportional to 5,109.78, 7,046.28 and 4,812.12

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Solution

The fourth proportional to 5,109.78, 7,046.28 and 4,812.12 is: 6,635.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,109.78 : 7,046.28 = 4,812.12 : x
  2. Step 2: Convert to fraction form
    5,109.78/7,046.28 = 4,812.12/x
  3. Step 3: Cross multiply
    5,109.78x = 7,046.28 × 4,812.12
  4. Step 4: Simplify right side
    5,109.78x = 33,907,544.91
  5. Step 5: Solve for x
    x = 33,907,544.91/5,109.78
  6. Step 6: Final answer
    x = 6,635.81

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1.5x scale

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.