Home / 7,987.29-11,022.80-4,450.50

Finding the Fourth Proportional to 7,987.29, 11,022.80 and 4,450.50

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Solution

The fourth proportional to 7,987.29, 11,022.80 and 4,450.50 is: 6,141.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,987.29 : 11,022.80 = 4,450.50 : x
  2. Step 2: Convert to fraction form
    7,987.29/11,022.80 = 4,450.50/x
  3. Step 3: Cross multiply
    7,987.29x = 11,022.80 × 4,450.50
  4. Step 4: Simplify right side
    7,987.29x = 49,056,949.15
  5. Step 5: Solve for x
    x = 49,056,949.15/7,987.29
  6. Step 6: Final answer
    x = 6,141.88

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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.