Home / 5,821.15-8,731.80-1,661.15

Finding the Fourth Proportional to 5,821.15, 8,731.80 and 1,661.15

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Solution

The fourth proportional to 5,821.15, 8,731.80 and 1,661.15 is: 2,491.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,821.15 : 8,731.80 = 1,661.15 : x
  2. Step 2: Convert to fraction form
    5,821.15/8,731.80 = 1,661.15/x
  3. Step 3: Cross multiply
    5,821.15x = 8,731.80 × 1,661.15
  4. Step 4: Simplify right side
    5,821.15x = 14,504,834.45
  5. Step 5: Solve for x
    x = 14,504,834.45/5,821.15
  6. Step 6: Final answer
    x = 2,491.75

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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.