Home / 9,414.75-12,991.79-5,382.01

Finding the Fourth Proportional to 9,414.75, 12,991.79 and 5,382.01

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Solution

The fourth proportional to 9,414.75, 12,991.79 and 5,382.01 is: 7,426.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,414.75 : 12,991.79 = 5,382.01 : x
  2. Step 2: Convert to fraction form
    9,414.75/12,991.79 = 5,382.01/x
  3. Step 3: Cross multiply
    9,414.75x = 12,991.79 × 5,382.01
  4. Step 4: Simplify right side
    9,414.75x = 69,921,973.39
  5. Step 5: Solve for x
    x = 69,921,973.39/9,414.75
  6. Step 6: Final answer
    x = 7,426.86

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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.