Home / 7,421.24-11,131.77-2,980.88

Finding the Fourth Proportional to 7,421.24, 11,131.77 and 2,980.88

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Solution

The fourth proportional to 7,421.24, 11,131.77 and 2,980.88 is: 4,471.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,421.24 : 11,131.77 = 2,980.88 : x
  2. Step 2: Convert to fraction form
    7,421.24/11,131.77 = 2,980.88/x
  3. Step 3: Cross multiply
    7,421.24x = 11,131.77 × 2,980.88
  4. Step 4: Simplify right side
    7,421.24x = 33,182,414.90
  5. Step 5: Solve for x
    x = 33,182,414.90/7,421.24
  6. Step 6: Final answer
    x = 4,471.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.