Home / 9,409.72-12,985.43-5,217.97

Finding the Fourth Proportional to 9,409.72, 12,985.43 and 5,217.97

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Solution

The fourth proportional to 9,409.72, 12,985.43 and 5,217.97 is: 7,200.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,409.72 : 12,985.43 = 5,217.97 : x
  2. Step 2: Convert to fraction form
    9,409.72/12,985.43 = 5,217.97/x
  3. Step 3: Cross multiply
    9,409.72x = 12,985.43 × 5,217.97
  4. Step 4: Simplify right side
    9,409.72x = 67,757,584.18
  5. Step 5: Solve for x
    x = 67,757,584.18/9,409.72
  6. Step 6: Final answer
    x = 7,200.81

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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.