Home / 3,639.90-5,461.20-1,450.20

Finding the Fourth Proportional to 3,639.90, 5,461.20 and 1,450.20

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Solution

The fourth proportional to 3,639.90, 5,461.20 and 1,450.20 is: 2,175.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,639.90 : 5,461.20 = 1,450.20 : x
  2. Step 2: Convert to fraction form
    3,639.90/5,461.20 = 1,450.20/x
  3. Step 3: Cross multiply
    3,639.90x = 5,461.20 × 1,450.20
  4. Step 4: Simplify right side
    3,639.90x = 7,919,832.24
  5. Step 5: Solve for x
    x = 7,919,832.24/3,639.90
  6. Step 6: Final answer
    x = 2,175.84

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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.