Home / 7,135.31-9,846.74-3,991.50

Finding the Fourth Proportional to 7,135.31, 9,846.74 and 3,991.50

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Solution

The fourth proportional to 7,135.31, 9,846.74 and 3,991.50 is: 5,508.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,135.31 : 9,846.74 = 3,991.50 : x
  2. Step 2: Convert to fraction form
    7,135.31/9,846.74 = 3,991.50/x
  3. Step 3: Cross multiply
    7,135.31x = 9,846.74 × 3,991.50
  4. Step 4: Simplify right side
    7,135.31x = 39,303,272.69
  5. Step 5: Solve for x
    x = 39,303,272.69/7,135.31
  6. Step 6: Final answer
    x = 5,508.28

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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.