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Finding the Fourth Proportional to 2,866.76, 4,293.72 and 2,491.76

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Solution

The fourth proportional to 2,866.76, 4,293.72 and 2,491.76 is: 3,732.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,866.76 : 4,293.72 = 2,491.76 : x
  2. Step 2: Convert to fraction form
    2,866.76/4,293.72 = 2,491.76/x
  3. Step 3: Cross multiply
    2,866.76x = 4,293.72 × 2,491.76
  4. Step 4: Simplify right side
    2,866.76x = 10,698,919.75
  5. Step 5: Solve for x
    x = 10,698,919.75/2,866.76
  6. Step 6: Final answer
    x = 3,732.06

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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.