Home / 3,143.76-4,721.12-2,896.50

Finding the Fourth Proportional to 3,143.76, 4,721.12 and 2,896.50

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Solution

The fourth proportional to 3,143.76, 4,721.12 and 2,896.50 is: 4,349.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,143.76 : 4,721.12 = 2,896.50 : x
  2. Step 2: Convert to fraction form
    3,143.76/4,721.12 = 2,896.50/x
  3. Step 3: Cross multiply
    3,143.76x = 4,721.12 × 2,896.50
  4. Step 4: Simplify right side
    3,143.76x = 13,674,709.60
  5. Step 5: Solve for x
    x = 13,674,709.60/3,143.76
  6. Step 6: Final answer
    x = 4,349.79

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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.