Home / 3,520.11-5,281.06-1,328.86

Finding the Fourth Proportional to 3,520.11, 5,281.06 and 1,328.86

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Solution

The fourth proportional to 3,520.11, 5,281.06 and 1,328.86 is: 1,993.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,520.11 : 5,281.06 = 1,328.86 : x
  2. Step 2: Convert to fraction form
    3,520.11/5,281.06 = 1,328.86/x
  3. Step 3: Cross multiply
    3,520.11x = 5,281.06 × 1,328.86
  4. Step 4: Simplify right side
    3,520.11x = 7,017,789.39
  5. Step 5: Solve for x
    x = 7,017,789.39/3,520.11
  6. Step 6: Final answer
    x = 1,993.63

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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.