Home / 7,639.34-11,453.01-5,143.28

Finding the Fourth Proportional to 7,639.34, 11,453.01 and 5,143.28

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Solution

The fourth proportional to 7,639.34, 11,453.01 and 5,143.28 is: 7,710.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,639.34 : 11,453.01 = 5,143.28 : x
  2. Step 2: Convert to fraction form
    7,639.34/11,453.01 = 5,143.28/x
  3. Step 3: Cross multiply
    7,639.34x = 11,453.01 × 5,143.28
  4. Step 4: Simplify right side
    7,639.34x = 58,906,037.27
  5. Step 5: Solve for x
    x = 58,906,037.27/7,639.34
  6. Step 6: Final answer
    x = 7,710.88

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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.