Home / 3,628.08-5,439.72-1,319.28

Finding the Fourth Proportional to 3,628.08, 5,439.72 and 1,319.28

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Solution

The fourth proportional to 3,628.08, 5,439.72 and 1,319.28 is: 1,978.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,628.08 : 5,439.72 = 1,319.28 : x
  2. Step 2: Convert to fraction form
    3,628.08/5,439.72 = 1,319.28/x
  3. Step 3: Cross multiply
    3,628.08x = 5,439.72 × 1,319.28
  4. Step 4: Simplify right side
    3,628.08x = 7,176,513.80
  5. Step 5: Solve for x
    x = 7,176,513.80/3,628.08
  6. Step 6: Final answer
    x = 1,978.05

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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.