Home / 3,639.80-5,459.70-3,591.20

Finding the Fourth Proportional to 3,639.80, 5,459.70 and 3,591.20

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Solution

The fourth proportional to 3,639.80, 5,459.70 and 3,591.20 is: 5,386.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,639.80 : 5,459.70 = 3,591.20 : x
  2. Step 2: Convert to fraction form
    3,639.80/5,459.70 = 3,591.20/x
  3. Step 3: Cross multiply
    3,639.80x = 5,459.70 × 3,591.20
  4. Step 4: Simplify right side
    3,639.80x = 19,606,874.64
  5. Step 5: Solve for x
    x = 19,606,874.64/3,639.80
  6. Step 6: Final answer
    x = 5,386.80

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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.