Home / 9,217.92-12,720.70-5,239.81

Finding the Fourth Proportional to 9,217.92, 12,720.70 and 5,239.81

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Solution

The fourth proportional to 9,217.92, 12,720.70 and 5,239.81 is: 7,230.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,217.92 : 12,720.70 = 5,239.81 : x
  2. Step 2: Convert to fraction form
    9,217.92/12,720.70 = 5,239.81/x
  3. Step 3: Cross multiply
    9,217.92x = 12,720.70 × 5,239.81
  4. Step 4: Simplify right side
    9,217.92x = 66,653,972.49
  5. Step 5: Solve for x
    x = 66,653,972.49/9,217.92
  6. Step 6: Final answer
    x = 7,230.91

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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.