Home / 9,217.98-12,721.37-5,239.86

Finding the Fourth Proportional to 9,217.98, 12,721.37 and 5,239.86

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Solution

The fourth proportional to 9,217.98, 12,721.37 and 5,239.86 is: 7,231.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,217.98 : 12,721.37 = 5,239.86 : x
  2. Step 2: Convert to fraction form
    9,217.98/12,721.37 = 5,239.86/x
  3. Step 3: Cross multiply
    9,217.98x = 12,721.37 × 5,239.86
  4. Step 4: Simplify right side
    9,217.98x = 66,658,171.61
  5. Step 5: Solve for x
    x = 66,658,171.61/9,217.98
  6. Step 6: Final answer
    x = 7,231.32

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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.