Home / 10,780.88-16,171.34-2,989.71

Finding the Fourth Proportional to 10,780.88, 16,171.34 and 2,989.71

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Solution

The fourth proportional to 10,780.88, 16,171.34 and 2,989.71 is: 4,484.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,780.88 : 16,171.34 = 2,989.71 : x
  2. Step 2: Convert to fraction form
    10,780.88/16,171.34 = 2,989.71/x
  3. Step 3: Cross multiply
    10,780.88x = 16,171.34 × 2,989.71
  4. Step 4: Simplify right side
    10,780.88x = 48,347,601.96
  5. Step 5: Solve for x
    x = 48,347,601.96/10,780.88
  6. Step 6: Final answer
    x = 4,484.57

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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.