Home / 3,520.39-5,278.88-1,329.30

Finding the Fourth Proportional to 3,520.39, 5,278.88 and 1,329.30

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Solution

The fourth proportional to 3,520.39, 5,278.88 and 1,329.30 is: 1,993.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,520.39 : 5,278.88 = 1,329.30 : x
  2. Step 2: Convert to fraction form
    3,520.39/5,278.88 = 1,329.30/x
  3. Step 3: Cross multiply
    3,520.39x = 5,278.88 × 1,329.30
  4. Step 4: Simplify right side
    3,520.39x = 7,017,215.18
  5. Step 5: Solve for x
    x = 7,017,215.18/3,520.39
  6. Step 6: Final answer
    x = 1,993.31

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1.5x scale

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.