Home / 5,821.07-8,731.61-1,438.57

Finding the Fourth Proportional to 5,821.07, 8,731.61 and 1,438.57

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Solution

The fourth proportional to 5,821.07, 8,731.61 and 1,438.57 is: 2,157.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,821.07 : 8,731.61 = 1,438.57 : x
  2. Step 2: Convert to fraction form
    5,821.07/8,731.61 = 1,438.57/x
  3. Step 3: Cross multiply
    5,821.07x = 8,731.61 × 1,438.57
  4. Step 4: Simplify right side
    5,821.07x = 12,560,981.35
  5. Step 5: Solve for x
    x = 12,560,981.35/5,821.07
  6. Step 6: Final answer
    x = 2,157.85

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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.