Home / 5,619.84-8,423.40-3,423.72

Finding the Fourth Proportional to 5,619.84, 8,423.40 and 3,423.72

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Solution

The fourth proportional to 5,619.84, 8,423.40 and 3,423.72 is: 5,131.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,619.84 : 8,423.40 = 3,423.72 : x
  2. Step 2: Convert to fraction form
    5,619.84/8,423.40 = 3,423.72/x
  3. Step 3: Cross multiply
    5,619.84x = 8,423.40 × 3,423.72
  4. Step 4: Simplify right side
    5,619.84x = 28,839,363.05
  5. Step 5: Solve for x
    x = 28,839,363.05/5,619.84
  6. Step 6: Final answer
    x = 5,131.71

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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.