Home / 5,621.63-8,432.84-2,158.88

Finding the Fourth Proportional to 5,621.63, 8,432.84 and 2,158.88

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Solution

The fourth proportional to 5,621.63, 8,432.84 and 2,158.88 is: 3,238.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,621.63 : 8,432.84 = 2,158.88 : x
  2. Step 2: Convert to fraction form
    5,621.63/8,432.84 = 2,158.88/x
  3. Step 3: Cross multiply
    5,621.63x = 8,432.84 × 2,158.88
  4. Step 4: Simplify right side
    5,621.63x = 18,205,452.85
  5. Step 5: Solve for x
    x = 18,205,452.85/5,621.63
  6. Step 6: Final answer
    x = 3,238.47

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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.