Home / 5,821.42-8,731.97-1,438.78

Finding the Fourth Proportional to 5,821.42, 8,731.97 and 1,438.78

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Solution

The fourth proportional to 5,821.42, 8,731.97 and 1,438.78 is: 2,158.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,821.42 : 8,731.97 = 1,438.78 : x
  2. Step 2: Convert to fraction form
    5,821.42/8,731.97 = 1,438.78/x
  3. Step 3: Cross multiply
    5,821.42x = 8,731.97 × 1,438.78
  4. Step 4: Simplify right side
    5,821.42x = 12,563,383.80
  5. Step 5: Solve for x
    x = 12,563,383.80/5,821.42
  6. Step 6: Final answer
    x = 2,158.13

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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.