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Finding the Fourth Proportional to 4,143, 6,212.32 and 1,543.80

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Solution

The fourth proportional to 4,143, 6,212.32 and 1,543.80 is: 2,314.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,143 : 6,212.32 = 1,543.80 : x
  2. Step 2: Convert to fraction form
    4,143/6,212.32 = 1,543.80/x
  3. Step 3: Cross multiply
    4,143x = 6,212.32 × 1,543.80
  4. Step 4: Simplify right side
    4,143x = 9,590,579.62
  5. Step 5: Solve for x
    x = 9,590,579.62/4,143
  6. Step 6: Final answer
    x = 2,314.89

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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.