Home / 7,422.13-11,133.20-3,315.25

Finding the Fourth Proportional to 7,422.13, 11,133.20 and 3,315.25

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Solution

The fourth proportional to 7,422.13, 11,133.20 and 3,315.25 is: 4,972.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,422.13 : 11,133.20 = 3,315.25 : x
  2. Step 2: Convert to fraction form
    7,422.13/11,133.20 = 3,315.25/x
  3. Step 3: Cross multiply
    7,422.13x = 11,133.20 × 3,315.25
  4. Step 4: Simplify right side
    7,422.13x = 36,909,341.30
  5. Step 5: Solve for x
    x = 36,909,341.30/7,422.13
  6. Step 6: Final answer
    x = 4,972.88

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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.