Home / 7,438.09-11,155.94-2,171.87

Finding the Fourth Proportional to 7,438.09, 11,155.94 and 2,171.87

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Solution

The fourth proportional to 7,438.09, 11,155.94 and 2,171.87 is: 3,257.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,438.09 : 11,155.94 = 2,171.87 : x
  2. Step 2: Convert to fraction form
    7,438.09/11,155.94 = 2,171.87/x
  3. Step 3: Cross multiply
    7,438.09x = 11,155.94 × 2,171.87
  4. Step 4: Simplify right side
    7,438.09x = 24,229,184.77
  5. Step 5: Solve for x
    x = 24,229,184.77/7,438.09
  6. Step 6: Final answer
    x = 3,257.45

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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.