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Finding the Fourth Proportional to 9,154.44, 13,720.41 and 4,217.22

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Solution

The fourth proportional to 9,154.44, 13,720.41 and 4,217.22 is: 6,320.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,154.44 : 13,720.41 = 4,217.22 : x
  2. Step 2: Convert to fraction form
    9,154.44/13,720.41 = 4,217.22/x
  3. Step 3: Cross multiply
    9,154.44x = 13,720.41 × 4,217.22
  4. Step 4: Simplify right side
    9,154.44x = 57,861,987.46
  5. Step 5: Solve for x
    x = 57,861,987.46/9,154.44
  6. Step 6: Final answer
    x = 6,320.65

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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.