Home / 7,135.28-9,846.66-3,991.52

Finding the Fourth Proportional to 7,135.28, 9,846.66 and 3,991.52

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Solution

The fourth proportional to 7,135.28, 9,846.66 and 3,991.52 is: 5,508.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,135.28 : 9,846.66 = 3,991.52 : x
  2. Step 2: Convert to fraction form
    7,135.28/9,846.66 = 3,991.52/x
  3. Step 3: Cross multiply
    7,135.28x = 9,846.66 × 3,991.52
  4. Step 4: Simplify right side
    7,135.28x = 39,303,140.32
  5. Step 5: Solve for x
    x = 39,303,140.32/7,135.28
  6. Step 6: Final answer
    x = 5,508.28

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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.