Home / 7,987.22-11,021.37-4,450.22

Finding the Fourth Proportional to 7,987.22, 11,021.37 and 4,450.22

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Solution

The fourth proportional to 7,987.22, 11,021.37 and 4,450.22 is: 6,140.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,987.22 : 11,021.37 = 4,450.22 : x
  2. Step 2: Convert to fraction form
    7,987.22/11,021.37 = 4,450.22/x
  3. Step 3: Cross multiply
    7,987.22x = 11,021.37 × 4,450.22
  4. Step 4: Simplify right side
    7,987.22x = 49,047,521.20
  5. Step 5: Solve for x
    x = 49,047,521.20/7,987.22
  6. Step 6: Final answer
    x = 6,140.75

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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.