Home / 7,438.61-11,155.05-2,171.86

Finding the Fourth Proportional to 7,438.61, 11,155.05 and 2,171.86

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Solution

The fourth proportional to 7,438.61, 11,155.05 and 2,171.86 is: 3,256.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,438.61 : 11,155.05 = 2,171.86 : x
  2. Step 2: Convert to fraction form
    7,438.61/11,155.05 = 2,171.86/x
  3. Step 3: Cross multiply
    7,438.61x = 11,155.05 × 2,171.86
  4. Step 4: Simplify right side
    7,438.61x = 24,227,179.01
  5. Step 5: Solve for x
    x = 24,227,179.01/7,438.61
  6. Step 6: Final answer
    x = 3,256.95

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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.