Home / 5,821.20-8,731.71-1,438.65

Finding the Fourth Proportional to 5,821.20, 8,731.71 and 1,438.65

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Solution

The fourth proportional to 5,821.20, 8,731.71 and 1,438.65 is: 2,157.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,821.20 : 8,731.71 = 1,438.65 : x
  2. Step 2: Convert to fraction form
    5,821.20/8,731.71 = 1,438.65/x
  3. Step 3: Cross multiply
    5,821.20x = 8,731.71 × 1,438.65
  4. Step 4: Simplify right side
    5,821.20x = 12,561,888.27
  5. Step 5: Solve for x
    x = 12,561,888.27/5,821.20
  6. Step 6: Final answer
    x = 2,157.96

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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.