Home / 2,543.40-3,511.62-2,277.72

Finding the Fourth Proportional to 2,543.40, 3,511.62 and 2,277.72

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Solution

The fourth proportional to 2,543.40, 3,511.62 and 2,277.72 is: 3,144.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,543.40 : 3,511.62 = 2,277.72 : x
  2. Step 2: Convert to fraction form
    2,543.40/3,511.62 = 2,277.72/x
  3. Step 3: Cross multiply
    2,543.40x = 3,511.62 × 2,277.72
  4. Step 4: Simplify right side
    2,543.40x = 7,998,487.11
  5. Step 5: Solve for x
    x = 7,998,487.11/2,543.40
  6. Step 6: Final answer
    x = 3,144.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.