Home / 3,520.32-5,281.40-1,329.68

Finding the Fourth Proportional to 3,520.32, 5,281.40 and 1,329.68

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Solution

The fourth proportional to 3,520.32, 5,281.40 and 1,329.68 is: 1,994.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,520.32 : 5,281.40 = 1,329.68 : x
  2. Step 2: Convert to fraction form
    3,520.32/5,281.40 = 1,329.68/x
  3. Step 3: Cross multiply
    3,520.32x = 5,281.40 × 1,329.68
  4. Step 4: Simplify right side
    3,520.32x = 7,022,571.95
  5. Step 5: Solve for x
    x = 7,022,571.95/3,520.32
  6. Step 6: Final answer
    x = 1,994.87

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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.