Home / 9,291.20-12,809.21-6,633.99

Finding the Fourth Proportional to 9,291.20, 12,809.21 and 6,633.99

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Solution

The fourth proportional to 9,291.20, 12,809.21 and 6,633.99 is: 9,145.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,291.20 : 12,809.21 = 6,633.99 : x
  2. Step 2: Convert to fraction form
    9,291.20/12,809.21 = 6,633.99/x
  3. Step 3: Cross multiply
    9,291.20x = 12,809.21 × 6,633.99
  4. Step 4: Simplify right side
    9,291.20x = 84,976,137.88
  5. Step 5: Solve for x
    x = 84,976,137.88/9,291.20
  6. Step 6: Final answer
    x = 9,145.88

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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.