Home / 10,780.56-16,171.20-2,989.44

Finding the Fourth Proportional to 10,780.56, 16,171.20 and 2,989.44

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Solution

The fourth proportional to 10,780.56, 16,171.20 and 2,989.44 is: 4,484.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,780.56 : 16,171.20 = 2,989.44 : x
  2. Step 2: Convert to fraction form
    10,780.56/16,171.20 = 2,989.44/x
  3. Step 3: Cross multiply
    10,780.56x = 16,171.20 × 2,989.44
  4. Step 4: Simplify right side
    10,780.56x = 48,342,832.13
  5. Step 5: Solve for x
    x = 48,342,832.13/10,780.56
  6. Step 6: Final answer
    x = 4,484.26

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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.