Home / 3,520.50-5,281.78-1,329.58

Finding the Fourth Proportional to 3,520.50, 5,281.78 and 1,329.58

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Solution

The fourth proportional to 3,520.50, 5,281.78 and 1,329.58 is: 1,994.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,520.50 : 5,281.78 = 1,329.58 : x
  2. Step 2: Convert to fraction form
    3,520.50/5,281.78 = 1,329.58/x
  3. Step 3: Cross multiply
    3,520.50x = 5,281.78 × 1,329.58
  4. Step 4: Simplify right side
    3,520.50x = 7,022,549.05
  5. Step 5: Solve for x
    x = 7,022,549.05/3,520.50
  6. Step 6: Final answer
    x = 1,994.76

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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.