Home / 9,215.09-13,811.01-3,943.86

Finding the Fourth Proportional to 9,215.09, 13,811.01 and 3,943.86

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Solution

The fourth proportional to 9,215.09, 13,811.01 and 3,943.86 is: 5,910.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,215.09 : 13,811.01 = 3,943.86 : x
  2. Step 2: Convert to fraction form
    9,215.09/13,811.01 = 3,943.86/x
  3. Step 3: Cross multiply
    9,215.09x = 13,811.01 × 3,943.86
  4. Step 4: Simplify right side
    9,215.09x = 54,468,689.90
  5. Step 5: Solve for x
    x = 54,468,689.90/9,215.09
  6. Step 6: Final answer
    x = 5,910.82

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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.