Home / 5,619.28-8,429.06-1,921.48

Finding the Fourth Proportional to 5,619.28, 8,429.06 and 1,921.48

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Solution

The fourth proportional to 5,619.28, 8,429.06 and 1,921.48 is: 2,882.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,619.28 : 8,429.06 = 1,921.48 : x
  2. Step 2: Convert to fraction form
    5,619.28/8,429.06 = 1,921.48/x
  3. Step 3: Cross multiply
    5,619.28x = 8,429.06 × 1,921.48
  4. Step 4: Simplify right side
    5,619.28x = 16,196,313.21
  5. Step 5: Solve for x
    x = 16,196,313.21/5,619.28
  6. Step 6: Final answer
    x = 2,882.28

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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.