Home / 3,639.20-5,459.72-1,447.92

Finding the Fourth Proportional to 3,639.20, 5,459.72 and 1,447.92

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Solution

The fourth proportional to 3,639.20, 5,459.72 and 1,447.92 is: 2,172.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,639.20 : 5,459.72 = 1,447.92 : x
  2. Step 2: Convert to fraction form
    3,639.20/5,459.72 = 1,447.92/x
  3. Step 3: Cross multiply
    3,639.20x = 5,459.72 × 1,447.92
  4. Step 4: Simplify right side
    3,639.20x = 7,905,237.78
  5. Step 5: Solve for x
    x = 7,905,237.78/3,639.20
  6. Step 6: Final answer
    x = 2,172.25

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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.