Home / 9,217.14-12,720.66-5,239.22

Finding the Fourth Proportional to 9,217.14, 12,720.66 and 5,239.22

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Solution

The fourth proportional to 9,217.14, 12,720.66 and 5,239.22 is: 7,230.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,217.14 : 12,720.66 = 5,239.22 : x
  2. Step 2: Convert to fraction form
    9,217.14/12,720.66 = 5,239.22/x
  3. Step 3: Cross multiply
    9,217.14x = 12,720.66 × 5,239.22
  4. Step 4: Simplify right side
    9,217.14x = 66,646,336.29
  5. Step 5: Solve for x
    x = 66,646,336.29/9,217.14
  6. Step 6: Final answer
    x = 7,230.70

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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.