Home / 5,780.20-8,671.02-2,081.80

Finding the Fourth Proportional to 5,780.20, 8,671.02 and 2,081.80

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Solution

The fourth proportional to 5,780.20, 8,671.02 and 2,081.80 is: 3,122.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,780.20 : 8,671.02 = 2,081.80 : x
  2. Step 2: Convert to fraction form
    5,780.20/8,671.02 = 2,081.80/x
  3. Step 3: Cross multiply
    5,780.20x = 8,671.02 × 2,081.80
  4. Step 4: Simplify right side
    5,780.20x = 18,051,329.44
  5. Step 5: Solve for x
    x = 18,051,329.44/5,780.20
  6. Step 6: Final answer
    x = 3,122.96

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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.