Home / 3,631.40-5,449.84-2,520.20

Finding the Fourth Proportional to 3,631.40, 5,449.84 and 2,520.20

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Solution

The fourth proportional to 3,631.40, 5,449.84 and 2,520.20 is: 3,782.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,631.40 : 5,449.84 = 2,520.20 : x
  2. Step 2: Convert to fraction form
    3,631.40/5,449.84 = 2,520.20/x
  3. Step 3: Cross multiply
    3,631.40x = 5,449.84 × 2,520.20
  4. Step 4: Simplify right side
    3,631.40x = 13,734,686.77
  5. Step 5: Solve for x
    x = 13,734,686.77/3,631.40
  6. Step 6: Final answer
    x = 3,782.20

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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.