Home / 7,987.45-11,022.70-4,450.79

Finding the Fourth Proportional to 7,987.45, 11,022.70 and 4,450.79

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Solution

The fourth proportional to 7,987.45, 11,022.70 and 4,450.79 is: 6,142.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,987.45 : 11,022.70 = 4,450.79 : x
  2. Step 2: Convert to fraction form
    7,987.45/11,022.70 = 4,450.79/x
  3. Step 3: Cross multiply
    7,987.45x = 11,022.70 × 4,450.79
  4. Step 4: Simplify right side
    7,987.45x = 49,059,722.93
  5. Step 5: Solve for x
    x = 49,059,722.93/7,987.45
  6. Step 6: Final answer
    x = 6,142.10

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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.